Superficial and deep perivascular and interstitial dermatitis with eosinophils. Sections show superficial and deep perivascular and interstitial inflammation with lymphocytes, and a conspicuous number of eosinophils. In context with the clinical history, an arthropod assault reaction is favored.
Clinical correlation is advised.
If hypersensitivity vasculitis is still of clinical concern, examination of levels through the specimen may be of value, inasmuch as vessel involvement may at times be rather focal.