VOLUME 2 Encyclopedia of Drugs, Alcohol & Addictive Behavior Third Edition HENRY R. KRANZLER & PAMELA KORSMEYER EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/14/20089:23AMPage3 ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR THIRD EDITION Volume 2 D–L Pamela Korsmeyer and Henry R. Kranzler EDITORSINCHIEF EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage1 D percent of community dwelling and 64 percent of DAST. SeeDrugAbuseScreeningTest(DAST). nursing home residents are delirious. Delirium is associated with increased morbidity and mortality. For example, 25 percent of elderly patients with delirium during hospitalization die within six n monthsafterdischarge(AmericanPsychiatricAsso- DELIRIUM. The primary clinical feature of ciation, 2000). delirium is the disturbance of consciousness and/ or attention. Associated symptoms are disorienta- Risk factors associated with delirium are as fol- tion, memory deficits, and language or perceptual lows: age over sixty-five, physical frailty, severe ill- disturbances.Anycognitivefunctionmaybeaffected. ness, multiple diseases, dementia, visual or hearing Fleeting false beliefs, including paranoid ideas, are impairment, polypharmacy, sustained heavy drink- commonbutusuallyshort-lived.Additionalclinical ing, renal impairment, and malnutrition. Precipi- symptoms include sleep/wake cycle disturbances tants are acute infections, electrolyte disturbances, (insomnia, daytime drowsiness, sleep/wake cycle drugs (especially anticholinergics), alcohol with- reversal,nocturnalworseningofsymptoms),increased drawal, pain, constipation, neurological disorder, or decreased psychomotor activity, increased or hypoxia, sleep deprivation, surgery, and environ- decreasedflowofspeech,increasedstartlereaction, mental factors (Young & Inouye, 2007). andemotionaldisturbances(irritability,depression, Delirium is an acute dysfunction of arousal euphoria,anxiety,apathy).Deliriumdevelopswithin and/or attentional brain networks. Since arousal hours to days, and its symptoms fluctuate over and attention are the bases for higher cognitive time. Although many cases of delirium resolve functions, most cognitive functions are affected. promptly with the treatment of the underlying Neurochemically, delirium is characterized by dis- cause,symptomsmaypersistformonthsaftertreat- turbances in acetylcholine, dopamine, norepi- ment, especially in the elderly. Sometimes an epi- sode of delirium establishes a new, lower cognitive nephrine, glutamate, gamma aminobutyric acid, baseline. and serotonin systems. Cytokines and blood-brain barrier abnormalities may also play a role (Alagia- Regardingepidemiology,thecommunityprev- krishnan & Wiens, 2004; Van Der Mast, 1998). alence of delirium is age-dependent: 0.4 percent in those over 18, 1.1 percent in those over 55 and Treatments for delirium target the underlying 13.6 percent in those over 85 (Folstein, Bassett, cause(s), as well as the associated behavioral prob- Romanowsk, et al., 1993). Delirium is common in lems and neuropsychiatric symptoms. Modifiable the hospital setting: 11 to 42 percent. Among the risk factors or precipitants should be addressed elderly presenting for hospital admission, 24 (e.g.,bytreatingtheunderlyingmedicalcondition, 1 EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage2 DELIRIUM TREMENS (DTS) withdrawing of possible offending medications, considerably longer. Early treatment of withdrawal correcting sensory deficits by using hearing aids symptoms is thought to prevent the risk of devel- and eyeglasses). Behaviors that put an individual opingDTsanditsrelatedmortality.Riskfactorsfor at risk should be managed by changing the envi- DTs include infection, a history of epileptic sei- ronment (e.g., providing access to familiar people zures, tachycardia (rapid heart rate)upon admission and objects, protecting the individual on a locked to hospital, withdrawal symptoms with a blood treatment unit when there is a risk of wandering) alcohol concentration 1 g/L, and a prior history of DTs. Concurrent medical conditions such as andthroughbehavioralinterventions(e.g.,reorien- infection, trauma, and liver failure may increase tation,de-escalationtechniques),possiblyincombi- the mortality of DTs. nationwithmedications.Neuropsychiatricsymptoms (e.g., perceptual disturbances, agitation, aggression) Symptoms of DTs include those typically seen are managed with antipsychotics, mood stabilizers, in delirium, including disorientation, confusion, or antiepileptics. Benzodiazepines may be useful in fluctuating levels of consciousness and attention, treatingwithdrawalfromalcohol. vivid hallucinations, delusions, agitation, and also include those found in alcohol withdrawal; fever, SeealsoComplications. elevated blood pressure, rapid pulse, sweating, and tremor. Delirium is the hallmark and defining fea- BIBLIOGRAPHY ture of DTs and differentiates the syndrome from Alagiakrishnan,K.,&Wiens,C.A.(2004).Anapproachto uncomplicated alcohol withdrawal. The delirium drug induced delirium in the elderly. Postgraduate may at times be preceded by a withdrawal seizure, MedicalJournal,80,388–393. although a seizure neither defines nor is its pres- encerequiredtodiagnoseDTs,andnotallpatients American Psychiatric Association. (2000). Diagnostic and that experience withdrawal seizures develop DTs. Statistical Manual of Mental Disorders (4th rev. ed.). Washington,DC:Author. The treatment of DTs necessitates close monitor- ing in the hospital setting. Folstein, M. F., Bassett, S. S., Romanowsk, A. J., et al. (1993).Theepidemiologyofdeliriuminthecommun- For patients in alcohol withdrawal but without ity: The Eastern Baltimore Mental Health Survey. DTs,astheseverityofwithdrawalincreases,patients InternationalPsychogeriatrics,3,169–179. may experience transient mild hallucinations that VanDerMast,R.C.(1998).Pathophysiologyofdelirium. are auditory, visual, or tactile in nature. Loss of Journal of Geriatric Psychiatry and Neurology, 11(3), insightintohallucinationsor developmentofmore 138–45. severe and persistent hallucinations may suggest Young, J., & Inouye, S. (2007). Delirium in older people. that the syndrome has progressed or is progressing BritishMedicalJournal,334,842–846. toDTs.Deliriumtremensisdifferentiatedfromthe KALOYANTANEV syndromesofalcoholichallucinosisandchronicalco- holic hallucinosis, which are terms used inconsis- tently in the literature to refer to the transient n hallucinosis experienced during alcohol withdrawal DELIRIUM TREMENS (DTS). Delir- and/or the subsequent development of a state of ium tremens (DTs) refers to the most severe form psychosis accompanied by hallucinations and/or of the alcohol withdrawal syndrome, occurring delusions (particularly persecutory) that persists with the abrupt cessation of, or reduction in, alco- beyond the period of detoxification. There is con- hol consumption in an individual who has been a troversy as to whether chronic alcoholic hallucino- heavydrinkerformanyyears.Itisassociatedwitha sis syndrome exists. significant mortality rate of an estimated 1 to 5 SeealsoDelirium;Withdrawal. percent, which is likely higher (perhaps up to 15 percent) if untreated. BIBLIOGRAPHY DTs usually begin at seventy-two to ninety-six Debellis, R., Smith, B. S., Choi, S., & Malloy, M. (2005). hours after the cessation of drinking and usually Managementofdeliriumtremens.JournalofIntensive last two to three days but can occasionally last CareMedicine,20(3),164–173. 2 ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage3 DEPRESSION DeMillas,W.,&Haasen,C.(2007).Treatmentofalcohol suicidal attempt); and functional impairment or hallucinosis with risperidone. American Journal of clinically significant distress. Addictions,16(3),249–250. If the symptoms of depression are the direct Graham,A.W.,Schultz,T.K.,Mayo-Smith,M.,&Ries,R. physiological effects of heavy consumption of alco- K. (Eds.). (2003). Principles of addiction medicine, third edition. Chevy Chase, MD: American Society of hol or another psychoactive substance and are AddictionMedicine. greater than the expected effects of intoxication or withdrawal, the depression is considered to be MYROSLAVAROMACH substance-induced. In DSM-IV, normal bereave- KARENPARKER REVISEDBYALBERTJ.ARIAS(2009) ment isnot presentifinappropriate guilt,thoughts of death unrelated to the deceased person, a pre- occupation with worthlessness, marked psychomo- tor retardation, and hallucinations that are not a phenomenon shared by others in one’s cultural DENMARK. SeeNordicCountries(Denmark, grouparepresent,signalingthepresenceofamajor Finland,Iceland,Norway,andSweden). depressive episode. Major depressive disorder is also distinguished from low mood resulting from amedicalconditionandmoodchangesthataredue n to exposure to a toxin or chemical substance. DEPRESSION. The term depression refers to Major Depression is one of the most common both a mood and a group of psychiatric disorders. psychiatric disorders experienced by adults. One IntheDiagnosticandStatisticalManualofMental study of datadrawn fromthe 2001–2002 National Disorders (DSM-IV-TR, 2000) depressed mood Epidemiologic Survey on Alcohol and Related occurs as part of major depressive disorder (MDD), Conditions indicated that approximately 13 percent dysthymic disorder (chronic, less severe depres- of the U.S. population has experienced a major sion), and schizoaffective disorder (psychosis co- depressive episode (Hasin et al., 2005). Women occurring with depressed or manic mood), and have higher rates of lifetime depression than men canalsooccurinbipolardisorder(periodsofmania (17.10percentvs.9.01percent),NativeAmericans that can alternate with periods of depression) and are at greater risk for depression than other ethnic during intoxication or withdrawal from certain groups, and individuals who are middle-aged or substances. widowed, separated, or divorced, and those with Many people experience brief periods of lower income levels are at increased risk. Depres- depressed mood that are often responses to stress- sion is associated with substantial impairment ful life events or negative experiences. However, (Weissmanetal.,1991;Kessleretal.,1994;Kessler when depression-related symptoms cluster, persist, etal.,2003),psychiatriccomorbidity(Weissmanetal., and ultimately cause impairment in functioning, 1991;Kessleretal.,1994;Kessleretal.,2003;Hasin the person is considered to be experiencing a etal.,2005),poorhealth(Dentinoetal.,1999),and depressive syndrome. The DSM-IV classifies this mortality(Insel&Charney,2003). syndromeasamajordepressiveepisodeandrequires the following criteria: a period of low mood (or Thecauseofdepressionismulti-systemic.Imag- lossofinterestorpleasureinusualactivities)lasting ing studies have shown abnormal neurochemical at least two weeks; four or more out of eight addi- activity and changes in volume in specific areas of tional symptoms (significant change in weight or the brain of depressed people. These biological appetite, poor or increased sleep nearly every day, changes, combined with genetic and psychosocial psychomotoragitationorretardationthatisnotice- factors(e.g.,lifeevents, learnedbehaviors,andcog- able to others nearly every day, fatigue or low nitions)allinteracttovaryingdegrees.Depressionis energy nearly every day, feelings of worthlessness a highly recurrent but treatable illness. Effective or inappropriate guilt nearly every day, difficulty treatmentoptionsareavailable(e.g.,psychotherapy, concentrating or making decisions nearly every pharmacotherapy, psychoeducation, and, generally day, and recurring thoughts of death, suicide, or as a last option, electroconvulsive therapy), and the ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION 3 EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage4 DESIGNER DRUGS choice of treatment depends on multiple factors the pharmaceutical industry, the design of new such as the individual’s psychiatric history, the drugs often utilizes principles of basic chemistry, severity of the current episode, family and social so that the structure of a drug molecule is slightly support, general medical health, the patient’s level altered in order to change its pharmacological of motivation, and the compatibility of the treat- activity. This strategy has a long and successful ment with the patient’s current circumstances. history in medical pharmaceutics, and many useful new drugs or modifications of older drugs have SeealsoComplications:MentalDisorders;RiskFactors forSubstanceUse,Abuse,andDependence:An clearly resulted in improved health care for many Overview. people throughout the world. The principles of structure-activity relationships have been applied to many medically approved drugs, especially in BIBLIOGRAPHY the search for a nonaddicting opioid analgesic for American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th rev. ed.). the treatment of pain. However, the clandestine Washington,DC:Author. production of ‘‘designer’’ street drugs is intended Dentino, A. N., Pieper, C. F., Rao, M. K., Currie, M. S., to avoid federal regulation and control. This prac- Harris, T., Blazer,D. G.,etal. (1999). Association of tice can often result in the appearance of new and interleukin-6andotherbiologicvariableswithdepres- unknown substances with wide-ranging variations sion in older people living in the community. Journal in purity. The quality of personnel involved in oftheAmericanGeriatricSociety,47,6–11. clandestine designer-drugsynthesis can range from Hasin, D., Goodwin, R., Stinson, F. S., & Grant, B. F. ‘‘cookbook’’ amateurs to highly skilled chemists, (2005). Epidemiology of major depressive disorder: which means that these substances have the poten- Results from the national epidemiologic survey on alcoholism and related conditions. Archives of General tial to cause dangerous toxicity with serious health Psychiatry,62,1097–1106. consequences for the unwitting drug user. Insel, T. R., & Charney, D. S. (2003). Research on major Aresurgenceinthepopularityofarelativelyold depression: Strategies and priorities. Journal of Amer- drug, methamphetamine, was observed during the icanMedicalAssociation,289,3167–3168. first decade of the twenty-first century. Although Kessler, R. C., Berglund, P., Demler, O., Jin, R., Koretz, methamphetamine is manufactured in foreign or D.,Merikangas,K.R.,etal.(2003).NationalComor- bidity Survey Replication: The epidemiology of major domestic ‘‘superlabs,’’ the drug is also easily made depressivedisorder:ResultsfromtheNationalComor- insmall clandestinelaboratorieswithrelativelyinex- bidity Survey Replication (NCS-R). Journal of Ameri- pensive over-the-counter ingredients. This practice canMedicalAssociation,289,3095–3105. can lead to wide variations in the purity of the Kessler, R. C., McGonagle, K. A., Zhao, S., Nelson, C., methamphetamine available for illicit distribution. Hughes,M.,Eshleman,S.,etal.(1994).Lifetimeand Methamphetamine is a highly addictive central ner- 12-month prevalence of DSM-III-R psychiatric disor- voussystemstimulantthatwasdevelopedearlyinthe ders in the United States: Results from the National twentieth century and initially used in nasal decon- ComorbiditySurvey.ArchivesofGeneralPsychiatry,51, 8–19. gestantsandbronchialinhalers.Likeamphetamine, methamphetamine produces increased activity and Weissman,M.M.,Bruce,L.M.,Leaf,P.J.,Florio,L.P.,& Holzer, C., III. (1991). Affective disorders. In L. N. talkativeness, anorexia, and a general sense of well- Robins & D. A. Regier (Eds.), Psychiatric disorders in being. However, methamphetamine differs from America: The Epidemiologic Catchment Area Study amphetamine in that much higher levels of meth- (pp.53–80).NewYork:FreePress. amphetamine get into the brain when comparable SHARONSAMET doses are administered, making it a more potent stimulant drug. And while methamphetamine blocks the reuptake of dopamine at low doses, in n a manner similar to cocaine, it also increases the DESIGNER DRUGS. ‘‘Designer drugs’’ release of dopamine, leading to much higher con- aresyntheticchemicalanalogsofabusedsubstances centrations of this neurotransmitter. Although the that are designed to produce pharmacological pleasurableeffectsofmethamphetaminemostlikely effects similar to the substances they mimic. In result from the release of dopamine, the elevated 4 ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage5 DESIGNER DRUGS release of this neurotransmitter also contributes to degenerationofserotonergicnerveterminalsinrats, the drug’s deleterious effects on nerve terminals. implying that it might induce chronic neurological Specifically, brain-imaging studies have demon- damageinhumansaswell. strated alterations in the activity of the dopamine Newerdesignerdrugsofabusethathaverecently system that are due to methamphetamine use. emergedontheblackmarketincludeamphetamine- Recent studies of chronic methamphetamine users derived drugs such as para-methoxyamphetamine have revealed structural and functional changes in (PMA), para-methoxymethamphetamine (PMMA) areas of the brain associated with emotion and and 4-methylthioamphetamine (4-MTA). In addi- memory, which may accountfor many ofthe emo- tion, newer designer drugs of the benzyl or phenyl tional and cognitive problems experienced by piperazinetype,andofthepyrrolidinophenonetype, chronic users. have gained popularity and notoriety as party or ‘‘rave’’ drugs. These include N-benzylpiperazine Addicts typically exhibit anxiety, confusion, (BZP); 1-(3, 4-methylenedioxybenzyl)piperazine insomnia, mood disturbances, and violent behav- (MDBP); 1-(3-chlorophenyl)piperazine (mCPP); ior,andtheycanalsodisplayanumberofpsychotic 1-(3-trifluoromethylphenyl)piperazine (TFMPP); features, including paranoia, visual and auditory 1-(4-methoxyphenyl)piperazine (MeOPP); alpha- hallucinations, and delusions. These psychotic pyrrolidinopropiophenone (PPP); 4’-methoxy- symptoms can last for months or years after meth- alpha-pyrrolidinopropiophenone (MOPPP); 3’, amphetamine use has ceased, and stress has been 4’-methylenedioxy-alpha-pyrrolidinopropiophe- showntoprecipitatethespontaneousrecurrenceof none (MDPPP); 4’-methyl-alpha-pyrrolidinopro- methamphetamine psychoses. Methamphetamine piophenone (MPPP); and 4’-methyl-alpha-pyrroli- can also produce a variety of cardiovascular effects, dinoexanophenone(MPHP).Thesedrugsproduce including rapid heart rate, irregular heartbeat, and feelings of euphoria and energy and a desire to increased blood pressure. Hyperthermia (elevated socialize. While ‘‘word on the street’’ suggests that bodytemperature)andconvulsionsmayoccurdur- these designer drugs are safe, studies in rats and ing a methamphetamine overdose, and, if not primates have suggested that they present risks to treated immediately, this can result in death. Tol- humans. In fact, a variety of adverse effects have erance to methamphetamine’s pleasurable effects beenassociatedwiththeuseofthisclassofdrugsin develops with chronic use, and abusers may take humans,includingalife-threateningserotoninsyn- higher doses of the drug, take it more frequently, drome (due to an excess of this neurotransmitter), or change their method of drug intake in an effort andtoxiceffectsontheliverandbrainthatresultin to intensify the desired effects. Methamphetamine behavioral changes. has also become associated with a culture of risky sexual behavior, both among men who have sex An opioid that has resulted in serious health with men and heterosexual populations, because hazards on the street is fentanyl (Sublimaze), a methamphetamineandrelatedpsychomotorstimu- potent and extremely fast-acting narcotic analgesic lants can increase libido. Paradoxically, however, withahighabuseliability.Thisdrughasalsoserved long-term methamphetamine abuse may be associ- as a template for many look-alike drugs in the ated with decreased sexual functioning. clandestine chemical laboratory. Very slight mod- ifications in the chemical structure of fentanyl can Other hallucinogenic designer drugs that are resultinanalogssuchaspara-fluoro-,3-methyl-,or amphetamine analogs—such as methylenedioxyam- alpha-methyl-fentanyl, with relative potencies that phetamine(MDA),methylenedioxymethamphetamine are 100, 900, and 1,100 times that of morphine, (MDMA or ‘‘Ecstasy’’) and methylenedioxyetham- respectively. Unfortunately, a steady increase in phetamine (MDEA or ‘‘Eve’’)—can also produce deaths from drug overdoses associated with fen- acuteandchronictoxicity.Acutetoxicityfromthese tanyl-like designer drugs has been reported. drugsisusuallymanifestedasrestlessness,agitation, sweating, high blood pressure, tachycardia, and Designer drugs already on the street, such as othercardiovasculareffects,allofwhicharesugges- methamphetamine and related stimulants,can pro- tiveofexcessivecentralnervoussystemstimulation. duce significant brain damage following long-term Followingchronicadministration,MDAproducesa use,andanalogsoftheopioidfentanylcanproduce ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION 5 EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage6 DEXTROAMPHETAMINE fatal overdoses. Taken to the extreme, the wide- Ziporyn, T. (1986). A growing industry and menace: spreadillicitmanufactureanduseofdesignerdrugs Makeshift laboratory’s designer drugs. Journal of the AmericanMedicalAssociation,256(22),3061–3063. with unknown toxicity could result in millions of people ingesting the drug before the toxic effects NICHOLASE.GOEDERS are known, potentially producing an epidemic of neurodegenerative disorders and fatalities. n SeealsoControlledSubstancesActof1970;MDMA; DEXTROAMPHETAMINE. This is the MPTP. d-isomer of amphetamine. It is classified as a psy- chomotorstimulantdrugandisthreetofourtimes BIBLIOGRAPHY aspotentasthel-isomerinelicitingcentralnervous Barnett, G., & Rapaka, R. S. (1989). Designer drugs: An system (CNS) excitatory effects. It is also more overview.InK.K.Redda,C.A.Walker,&G.Barnett potent than the l-isomer in its anorectic (appetite (Eds.),Cocaine,marijuana,designerdrugs:Chemistry, suppressant) activity, but slightly less potent in its pharmacology, and behavior (pp. 163–174). Boca cardiovascular actions. It is prescribed in the treat- Raton,FL:CRCPress. mentofnarcolepsyandobesity,althoughcaremust Beebe, D. K., & Walley, E. (1991). Substance abuse: The be taken in such prescribing because of the sub- designer drugs. American Family Physician, 43(5), stantial abuse liability. 1689–1698. Christophersen, A. S. (2000). Amphetamine designer High-dose chronic use of dextroamphetamine drugs: An overview and epidemiology. Toxicology Let- can lead to the development of a toxic psychosis as ters,112–113,127–131. well as to other physiological and behavioral prob- de Boer, D., Bosman, I. J., Hidve´gi, E., Manzoni, C., lems.ThistoxicitybecameaproblemintheUnited Benko¨, A. A., dos Reys, L. J., et al. (2001). Pipera- States in the 1960s, when substantial amounts of zine-likecompounds:Anewgroupofdesignerdrugs- the drug were being taken for nonmedical reasons. of-abuse on the European market. Forensic Science Although still abused by some, dextroamphet- International,121(1–2),47–56. amineisnolongerthestimulantofchoiceformost Klein, M., & Kramer, F. (2004). Rave drugs: Pharmaco- psychomotor stimulant abusers. logicalconsiderations.AANAJournal,72(1),61–67. SeealsoAmphetamineEpidemics,International;Coca/ Maurer,H.H.,Kraemer,T.,Springer,D.,&Staack,R.F. Cocaine,International. (2004). Chemistry, pharmacology, toxicology, and hepatic metabolism of designer drugs of the amphet- amine (ecstasy), piperazine, and pyrrolidinophenone BIBLIOGRAPHY types: A synopsis. Therapeutic Drug Monitoring, deWit,H.,etal(2002).Acuteadministrationofd-amphet- 26(2),127–131. aminedecreasesimpulsivityinhealthyvolunteers.Neu- Nichols,D.E.(1989).Substitutedamphetaminecontrolled ropsychopharmacology,27,813–825. substance analogues. In K. K. Redda, C. A. Walker & Schmetzer,A.D.(2004).Thepsychostimulants.Annalsof G.Barnett(Eds.),Cocaine,marijuana,designerdrugs: theAmericanPsychotherapyAssociation,7,31–32. Chemistry, pharmacology, andbehavior (pp.175–185). BocaRaton,FL:CRCPress. MARIANW.FISCHMAN Soine,W.H.(1986).Clandestinedrugsynthesis.Medicinal ResearchReviews,6(1),41–47. Staack, R. F., & Maurer, H. H. (2005). Metabolism of n designerdrugsofabuse.CurrentsinDrugMetabolism, DIAGNOSIS OF SUBSTANCE USE 6(3),259–274. DISORDERS: DIAGNOSTIC CRI- Trevor, A., Castagnoli, N., Jr., & Singer, T. P. (1989). TERIA. Diagnosis is the process of identifying Pharmacologyandtoxicology ofMPTP:Aneurotoxic and labeling specific disease conditions. The signs by-product of illicit designer drug chemistry. In K. K. and symptoms used to classify a sick person as Redda, C. A. Walker & G. Barnett (Eds.), Cocaine, havingadiseasearecalleddiagnosticcriteria.Diag- marijuana, designer drugs: Chemistry, pharmacology, nostic criteria and classification systems are useful and behavior (pp. 187–200). Boca Raton, FL: CRC Press. for making clinical decisions, estimating disease 6 ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage7 DIAGNOSIS OF SUBSTANCE USE DISORDERS: DIAGNOSTIC CRITERIA prevalence, understanding the causes of disease, CLASSIFICATION SYSTEMS and facilitating scientific communication. Alcoholismanddrugaddictionhavebeenvariously definedasmedicaldiseases,mentaldisorders,social Diagnostic classification provides the treating problems, and behavioral conditions. In some clinicianwithabasisforretrievinginformationabout cases, they are considered the symptom of an apatient’sprobablesymptoms,thelikelycourseofan underlying mental disorder (Babor, 1992). Some illness, and the biological or psychological processes ofthesedefinitionspermittheclassificationofalco- thatunderliethedisorder.Forexample,theDiagnostic holism and drug dependence within standard and Statistical Manual (DSM) of the American Psy- nomenclatures such as the DSM and ICD. The chiatric Association is a classification of mental disor- most recent revisions of both of these diagnostic ders that provides the clinician with a systematic systems—DSM-IV (1994) and ICD-10 (1992)— description of each disorder in terms of essential fea- have resulted in a high degree of compatibility tures,ageofonset,probablecourse,predisposingfac- between the classification criteria used in the tors, associated features, and differential diagnosis. United States and those used internationally. Both Mental health professionals can use this system to systemsnowdiagnosedependenceaccordingtothe diagnose substance use disorders in terms of the fol- elements first proposed by Edwards and Gross lowingcategories:acuteintoxication,abuse,depend- (1976). They also include a residual category ence, withdrawal, delirium, and other disorders. In (harmful alcohol use [ICD-10]; alcohol abuse contrast to screening, diagnosis typically involves a [DSM-IV]) that allows classification of psycholog- broaderevaluationofsigns,symptoms,andlaboratory ical, social, and medical consequences directly dataastheserelatetothepatient’sillness.Thepurpose related to substance use. of diagnosis is to provide the clinician with a logical basisforplanningtreatmentandestimatingprognosis. HISTORY TAKING Another purpose of classification is the collec- Obtaining accurate information from patients with tion of statistical information on a national and alcohol and drug problems is often difficult international scale. The primary purpose of the because of the stigma associated with substance World Health Organization’s International Classi- abuse and the fear of legal consequences. At times, fication of Diseases (ICD), for example, is the enu- theseindividualswanthelp forthemedicalcompli- merationofmorbidityandmortalitydataforpublic cationsofsubstanceuse(suchasinjuriesordepres- health planning. In addition, a good classification sion)butareambivalentaboutgivingupalcoholor will facilitate communication among scientists and drug use entirely. It is often the case that these providethebasicconceptsneededfortheorydevel- patients are evasive and attempt to conceal or min- opment. Both the DSM and ICD have also been imize the extent of their alcohol or drug use. used extensively to classify persons for scientific Acquiringaccurateinformationaboutthepresence, research. Classification thus provides a common severity, duration, and effects of alcohol and drug frame of reference in communicating scientific use therefore requires a considerable amount of findings. clinical skill. Diagnosis may also serve a variety of adminis- The medical model for history taking is the trative purposes. When a patient is suspected of most widely used approach to diagnostic evalua- having a substance use disorder, diagnostic proce- tion. This model consists of identifying the chief dures are needed to exclude ‘‘false positives’’ (i.e., complaint, evaluating the present illness, reviewing people who appear to have the disorder but who past history, conducting a review of biological sys- reallydonot)andborderlinecases.Insurancereim- tems (e.g., gastrointestinal, cardiovascular), asking bursement for medical treatment increasingly about family history of similar disorders, and dis- demands that a formal diagnosis be confirmed cussing the patient’s psychological and social func- according to standard procedures or criteria. The tioning. Ahistoryofthepresentillnessbeginswith need for uniform reporting of statistical data, as questions on the use of alcohol, drugs, and well as the generation of prevalence estimates for tobacco. The questions should cover prescription epidemiological research, often requires a diagnos- drugs as well as illicit drugs, with additional elabo- tic classification of the patient. ration of the kinds of drugs, the amount used, and ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION 7 EncyclopediaofDrugs,Alcohol&AddictiveBehavior,3rdEdition,Vol2-Finals/10/13/200819:22PMPage8 DIAGNOSIS OF SUBSTANCE USE DISORDERS: DIAGNOSTIC CRITERIA the mode of administration (e.g., smoking, injec- substanceusedisorders,butalsoaboutphysicalcon- tion). Questions about alcohol use should refer ditions and psychiatric disorders that are commonly specifically to the amount and frequency of using associatedwithsubstanceabuse.Becauseofitsstand- the major beverage types (wine, spirits, and beer). ardized questioning procedures, the CIDI has been A thorough physical examination is important usedbythe World Health Organizationtoestimate because each substance has specific pathological the prevalence of mental disorders, including sub- effects on certain organs and body systems. For stance use disorders, in the general populations of example, alcohol commonly affects the liver, stom- countriesthroughouttheworld(Haroetal.,2006). ach, cardiovascular system, and nervous system, In the United States, the Alcohol Use Disorder while drugs often produce abnormalities in ‘‘vital and Associated Disabilities Interview Schedule-IV signs’’ such as temperature, pulse, and blood (AUDADIS-IV) has been used extensively in popu- pressure. lationsurveys,includingtheNationalEpidemiologic SurveyonAlcoholandRelatedConditions(Grantet A mental status examination frequently gives al., 2003). It covers alcohol consumption, tobacco evidence of substance use disorders, which can be use,familyhistoryofdepression,andselectedDSM- signaled by poor personal hygiene, inappropriate IVAxisIandIIpsychiatricdisorders. affect (e.g., sad, euphoric, irritable, anxious), illog- ical or delusional thought processes, and memory Asecondtypeofdiagnosticinterviewisexempli- problems.Thephysicalexamination canbesupple- fiedbytheStructuredClinicalInterviewforDSM-IV mentedbylaboratorytests,whichsometimesaidin (SCID), which is designed for use by mental health early diagnosis beforesevereor irreversible damage professionals(Spitzeretal.,1992;Firstetal.,2002). has taken place. Laboratory tests are useful in two The SCID assesses the most commonly occurring ways: (1) alcohol and drugs can be measured psychiatricdisordersdescribedinDSM-IV,including directly in blood, urine, or exhaled air; (2) bio- mood disorders, schizophrenia, and substance use chemical and psychological functions known to be disorders. A similar clinical interview designed for affected by substance use can be assessed. Many internationaluseistheSchedulesforClinicalAssess- drugs can be detected in the urine for 12 to 48 ment in Neuropsychiatry (SCAN; see Wing et al., hours after their consumption. An estimate of 1990). The SCID and SCAN interviews allow the blood alcohol concentration (BAC) can be made experienced clinician to tailor questions to fit the directly by blood test or indirectly by means of a patient’s understanding, to ask additional questions breath or saliva test. Elevations of the liver enzyme thatclarifyambiguities,tochallengeinconsistencies, gamma-glutamyl transpeptidase (GGTP) or the andtomakeclinicaljudgmentsabouttheseriousness protein carbohydrate-deficient transferrin (CDT) of symptoms. Both are modeled on the standard are sensitive indicators of chronic and heavy alco- medical history practiced by many mental health hol intake. However, while these tests can detect professionals. Questions about the chief complaint, recent use of a wide variety of psychoactive sub- past episodes of psychiatric disturbance, treatment stances (e.g., opioids, cannabis, stimulants, barbi- history, and current functioning all contribute to a turates), they are not able to detect alcohol or thorough and orderly psychiatric history that is drug dependence. extremelyusefulfordiagnosingsubstanceusedisor- Inadditiontothephysicalexaminationandlabo- ders. The Psychiatric Research Interview for Sub- ratory tests, a variety of diagnostic interview proce- stance and Mental Disorders (PRISM; Hasin et al., dures have been developed to provide objective, 2006) is another semistructured diagnostic inter- empiricallybased,reliablediagnosesofsubstanceuse view. It is designed to deal with the problems of disorders in various clinical populations. One type, psychiatricdiagnosiswhensubjectsorpatientsdrink exemplified by the Diagnostic Interview Schedule heavilyorusedrugs.ThePRISMisusedformakinga (DIS; see Robins et al., 1981) and the Composite number of DSM-IV Axis I and Axis II diagnoses, InternationalDiagnosticInterview(CIDI;seeRobins including alcohol and drug use disorders, in a way et al., 1988), is highly structured and requires a that allows differentiation of psychiatric disorders minimum of clinical judgment by the interviewer. from substance-induced disorders and from the Theseinterviewsprovideinformationnotonlyabout expectedeffectsofintoxicationandwithdrawal. 8 ENCYCLOPEDIA OF DRUGS, ALCOHOL & ADDICTIVE BEHAVIOR, 3RD EDITION
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