<unk>  can be diagnosed either by a skin (punch) biopsy at the edge of a wound with immunofluorescent mapping, or via blood sample and genetic testing.
Epidermolysis bullosa
Pemphigus vulgaris
Tinea imbricata
Bullous pemphigoid
Linitis plastica
Diabetic bulla
Ichthyosis bullosa of Siemens
Lichen myxedematosus