SUBEPIDERMAL VESICULAR DERMATITIS
Lymphocytes
| Ballooning and individualnecrotic keratinocytes | Erythema multiforme |
| Sclerosis of thickened papillary dermis, thick collagen bundles in upper part of reticular dermis, many erythrocytes in blister sometimes | Lichen sclerosus et atrophicus |
| Ballooning, individual necrotic keratinocytes | PLEVA |
| Wedge-shaped hypergranulosis of epidermis at sides of blister | Lichen planus, bullous |