Differential diagnosis Patch test Cutaneous disorders in musicians include frictional injury ("fiddler's neck"), hyperhidrosis, acne mechanica and vascular compromise. Other agents of irritant and allergic contact dermatitis may be rosewood, Makassar ebony, cocobolo wood, African blackwood, nickel, reed, propolis (bee glue), chromium and paraphenylenediamine. Patch testing can be performed for identification of the cause.
Abietic acid dermatitis
Phytophotodermatitis
Phototoxic tar dermatitis
Ichthyosis acquisita
Urticaria pigmentosa
Lacquer dermatitis
Alopecia mucinosa
Dermatopathia pigmentosa reticularis