Generally a two-step approach is followed. First, a screening test involving IgM and IgG ELISA. If the first screening has a positive result, or there is a high clinical suspicion in spite of Elisa being negative, then the second step is to perform a Western Blot as a confirmatory test. Other methods include microscopy and culture (in modified Kelly's medium) of skin biopsy or blood samples.
Acrodermatitis chronica atrophicans
Dermatitis herpetiformis
Rodent mite dermatitis
Chondrodermatitis nodularis chronica helicis
Dermatitis repens
Eczema vaccinatum
Abietic acid dermatitis
Intertrigo