Sequelae of severe trichotillomania initiating in childhood and adolescence were studied in 26 patients aged 21-32. A mean prospective follow-up lasted for 13 years. Thirteen patients were qualified as healthy. In the rest trichotillomania remained the main symptom of the illness, in 9 patients the progressive disease became the basis for secondary psychopathies, pathocharacterological personality of deficiency type. The following factors reliably affecting the prognosis were revealed: residual-organic origin of trichotillomania, intensity, generalization and polymorphism of the habit, persistence of the syndrome development, severity of vegetative component, late therapy start.