papular urticaria
Histologic Features
- Scale-crust overlying a focal spongiosis at the site of the bite
- Extravasated red blood cells in the edematous papillary dermis
- A superficial perivascular infiltrate of lymphocytes, histiocytes and many eosinophils
- A moderate number of eosinophils between collagen bundles
Updated Wednesday, July 31, 2013 8:30:48 PM