We review the literature on the genetic epidemiology of four 'neurotic
' disorders along with the personality trait of neuroticism. Unipolar
depression, phobic disorders, panic disorder, neuroticism, and, to a l
esser extent, generalized anxiety disorder are familial. The familiali
ty of these disorders and neuroticism appears to be due to genetic fac
tors, particularly for unipolar depression and neuroticism. Despite su
bstantial interest in the molecular genetics of unipolar depression, p
anic disorder, and neuroticism, no genes have as yet been definitively
identified. (C) 1998 Rapid Science Ltd.