Impulse-control Disorders



Impulse-control Disorders





Impulse-control disorders (ICD) is an as yet poorly understood grouping of seemingly related conditions, the symptoms of which overlap elements of many other conditions. They seem to have in common an impulse to do something that is innately and ultimately destructive to themselves or others, to feel increasing tension or arousal before acting, to be unable to resist that drive, to feel pleasure or relief during and immediately after the act, and to feel guilty or regretful some time later (depending on their history and what they have done). DSM-IV-TR lists five specific disorders and one general disorder:


Kleptomania

Pyromania

Pathological Gambling

Trichotillomania

Intermittent Explosive Disorder

Impulse-Control Disorder NOS

Most of the disorders that are comorbid with an ICD often have overlapping symptoms with them: OCD, OCPD, depressive disorders, bipolar spectrum disorders, substance abuse, cluster B personality disorders, ADHD, and eating disorders. A genetic basis is suggested by a high incidence in first-degree relatives of conditions such as: depression, bipolar disorders, substance abuse, personality disorders, alcoholism, and pathologic gamblers among the relatives of pathologic gamblers. There is clearly a neurologic basis for much of this behavior, but it is not well understood. Best identified at this point is that, as a group, ICD is related to low levels of CNS serotonin (responsible for impulsivity?) as well as altered activity in the orbitofrontal cortex (1) and the ventromedial prefrontal cortex.

Males seem more common is some disorders, and females in others, but this has not been well separated. The course of the illness takes several forms: (a) a short period of ICD behavior and then remission, (b) waxing and waning periods of ICD behavior and extended problem-free times, and (c) chronic problems with mild waning periods.



KLEPTOMANIA, P. 667, 312.32

These people steal things of little monetary or personal value impulsively and with no preplanning, even though they frequently develop a criminal record for shoplifting. They experience a sudden urge to steal something, often surprising themselves, and that urge accompanied by increasing tension becomes overpowering, only to be relieved by shoplifting something. They may feel remorseful later and either give the object away or try to return it to the store. A few patients have amnesia for their theft, and another subgroup “don’t even think about it” and do it by habit (2). In severe cases, they may become homebound because of fear of exposure to places where they might steal. The female-to-male ratio is 2-3:1; the “typical” patient is a married woman in her 30s; and approximately 5%+ of all shoplifters have kleptomania.

These patients have marked comorbidity, with mood (high rate of attempted suicide) and substance disorders particularly common, as well as anxiety disorders, eating disorders, and other ICDs. Although OCD is not common, hoarding is (3). Treatment is of unproven effectiveness, but consists of a variety of behavioral techniques as well as occasionally effective SSRIs, valproate, lithium, and naltrexone (4).

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Sep 12, 2016 | Posted by in PSYCHIATRY | Comments Off on Impulse-control Disorders

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