In a controlled family study of attention deficit disorder, data were
collected on first-degree relatives of 22 children with attention deficit
disorder and 20 normal children. The rate of major affective disorder was
significantly higher in the attention deficit disorder probands (32%) and
their relatives (27%) than in the normal control subjects (0%) and their
relatives (6%). The findings indicate that attention deficit disorder is
associated with higher risk for affective disorder and suggest that
probands who have both disorders may represent a distinct subgroup.Abstract Teaser