title: "Needle freaks": compulsive self-injection by drug users.
mesh_terms: D000293:Adolescent; D000328:Adult; D001521:Behavior Therapy; D002648:Child; D003192:Compulsive Behavior; D003213:Conditioning, Psychological; D003220:Conflict, Psychological; D003674:Defense Mechanisms; D005260:Female; D006801:Humans; D007267:Injections; D008019:Life Style; D008297:Male; D009294:Narcotics; D009339:Needles; D011582:Psychological Theory; D011606:Psychosexual Development; D012054:Reinforcement, Psychology; D012737:Sex Factors; D012725:Sexual Behavior; D019966:Substance-Related Disorders / Q000145:classification / Q000209:etiology* / Q000628:therapy; D013561:Symbolism
chemical_list: D009294:Narcotics