Fig. 42. Nonmycotic diseases simulating dermatophytosis. A, pitting of fingernails of a 

 patient with psoriasis. B, congenital defect. C, onycholysis. D, severe dystrophic onychia with 

 bulbous terminal phalanges. Typical psoriatic lesions were present elsewhere. E and F, acro- 

 dermatitis perstans (Hallopeau). G, pustular psoriasis. 



122 



