Review the subject literature on ADHD in adulthood to check the clinical impression that ADHD is not only a child, but also an adult psychiatric disorder. Given this objective the emphasis is on symptoms, etiology and prognosis. Diagnosis and treatment are only briefly covered. Method: Articles covering ADHD (1985- 1991) were identified through Index Medicus, Citation Index and by bibliographic review of pertinent articles. Results: 3 to 10% of the male children suffer from ADHD, ± 50% of the children keep some symptoms, through and after adolescence, ± 25% develop characteristics of Anti Social Personality Disorder and 30% keep suf- fering from a full ADHD. The residual symptomatology is reviewed in detail. Conclusion: ADHD is not a typical child psychiatric disorder. Its place and the diagnostic criteria in the DSM and ICD should be changed to facilitate diagnosis of ADHD in adults.