Diagnosis is made by clinical observation and the following tests. (1) Gram stain of the fluid from pustules or bullae, and tissue swab. (2) Blood culture (3) Urine culture (4) Skin biopsy (5) Tissue culture Magnetic resonance imaging can be done in case of<unk>  of plantar foot to differentiate from necrotizing fasciitis.
Ecthyma gangrenosum
Pyoderma gangrenosum
Lichen myxedematosus
Tuberculosis verrucosa cutis
Granuloma faciale
Epidermolysis bullosa
Streptococcal intertrigo
Pseudomonal pyoderma