Case Number : Case 2589 - 09 June 2020 Posted By: Uma Sundram

Crust formation with Spongiosis and scattered eosinophils, most likely Arthropod bite. Thank you for the case

Herpes 

Grover disease is my favorite spot, because of a mixed pattern between Pemphigus, Spongiotic Dermatitis and something resembling Darier disease ( round corps in fig 4 and unicellular dyskeratosis ).. The presence of eosinophils in Grover's disease serves as a distinguishing feature from Darier's disease. 

1 hour ago, vincenzo said:

Grover disease is my favorite spot, because of a mixed pattern between Pemphigus, Spongiotic Dermatitis and something resembling Darier disease ( round corps in fig 4 and unicellular dyskeratosis ).. The presence of eosinophils in Grover's disease serves as a distinguishing feature from Darier's disease. 

I thought I've seen viral changes, but with a second look I agree with Grover's.

I would like a clinical photo ... Grover was one of my initial hypotheses, however I am finding eosinophils in excess for Grover. For arthropod bites I miss the wedge infiltrate. Then I think of an autoimmune bullous dermatosis in the urticarial phase.

Grover’s 

Agree with Grover's

Grover's.

Agree with Grover's

Grover's disease. DIF was negative. 

my first spot was Grover's too