Blistering = Please note the three "D"s - Development, Duration, Distribution (± itch)
Localised | |
---|---|
Eczema | Pompholyx blisters on hands & feet, itching |
Allergic Rxn | Include insect bites & topical applications |
Psoriasis | Deep sterile non-itching blisters on soles & palms |
Impetigo | Usually localised, Staph & Strep isolated |
Herpes simplex | Itching lesions develop turbid blisters |
Generalised | |
---|---|
Eczema | Lichenification, crusting itching |
Dermatitis herpetiformis | Itching, extensor surfaces, persisting, superficial blisters |
Chickenpox | Prodromal illness. Crops blisters, self limiting. May affect mucous membranes |
Pityriasis lichenoides | Very to chickenpox but no infective agent. May last for months |
Erythema multiforme | Deep blisters in target lesions. Mucous membranes. Drugs/bugs |
Pemphigoid | Older patients. Trunk & flexures. |
Pemphigus | Adults. Widespread superficial blisters. Mucous membrane erosions. |