Harry Potter casts a spell on accident prone children

Abstract

and human pathologies are similar.Trichotillomania may arise as a result of the misregulation of an innate self grooming behaviour that results in excessive repetition.It would be interesting to find out whether subsets of human patients with trichotillomania have defects in the Hoxb8 gene or in the paralogous family members Hoxc8 and Hoxd8.We thank Judith A James for supplying the mice shown in the photograph and Yaser Dorri for his help with the photography.