SUBEPIDERMAL VESICULAR DERMATITIS
Little or no infiltrate
| No other findings | Epidermolysis bullosa,
junction Epidermolysis bullosa, dermolytic Epidermolysis bullosa, acquired |
| Necrosis of adnexal epithelia | Hypoxemia plus pressure |
| Necrosis of epidermis with no infiltrate | Burn, acute |
| Necrosi of epidermis with scant infiltrate | Erythema multiforeme, severe |
| Few neutrophils and eosinophils | Bullous pemphigoid/ Herpes gesationis, cell poor |
| Dermal papillae preserved, perivenular rims of homogeneous material, extensive solar elastosis | Porphyria cutanea
tarda Variegate porphyria Erythropoietic protoporphyris Hepatoerythropoietic porphyria |
| Papillae preserved | Suction blister |
| Globules of amyloid in upper part of dermis | Bullous amyloidosis |
| Subepidermal fibrosis | Blister above scar |
| Fringe of basal cells, elongated thin nuclei of spinous cells perpendicular to skin surface | Blister secondary to electrodesication |