Abstract
1. 33 cases of prurigo nodularis are reported.
2. In the histolo pical study, the existence of Pautrier's neuroma is verified, the significadsu of which remains still unanswered.
3. In the study of the etiology, sensitization to insect bites is noticed. This is certified by intracutaneous reaction and further with therapeutic results with the extract.
4. The instance of the abortive form is observed.