Herpes virus infection
Fully developed
| Moderately dense superficial and, sometimes, superficial and deep perivascular and interstitial infiltrate of lymphocytes and neutrophils |
| Edema of the papillary dermis |
| Fibrin sometimes present in walls of venules in the upper part of the dermis, and, in that circumstance, neutrophils are sometimes accompanied by nuclear "dust" |
| Some multinucleate ballooned keratinocytes in the epidermis and, sometimes, in infundibula, sebaceous units, and eccrine ducts; nuclei steel-gray with accentuation of uncleoplasm at their periphery |
| Vesicles consequent to ballooning associated with reticular alteration |
| Acantholytic cells, some necrotic, within the intraepidermal blister |
| Some intraepidermal vesicles rupturing and thereby becoming subepidermal |