Drug use as a protective system.
D000328:Adult; D001007:Anxiety / Q000523:psychology; D002648:Child; D003192:Compulsive Behavior / Q000523:psychology; D003717:Denial, Psychological; D004532:Ego; D006801:Humans; D019964:Mood Disorders / Q000523:psychology; D009293:Opioid-Related Disorders / Q000209:etiology / Q000523:psychology; D010553:Personality Development; D010554:Personality Disorders / Q000523:psychology; D010698:Phobic Disorders / Q000523:psychology; D019966:Substance-Related Disorders / Q000209:etiology*; D013475:Superego