ins may also cause obsessive-compulsive and related disorder symptoms. Laboratory as-
sessments (e.g., urine toxicology) may be usef ul to measure substance intoxication as part
of an assessment for obsessive-co mpulsive and related disorders.
Prevalence
In the general population, the very limited data  that are available indicate that substance-
induced obsessive-compulsive and related disorder is very rare. 
Differential Diagnosis
Substance intoxication. Obsessive-compulsive and relate d disorder symptoms may oc-