<unk>  does not usually form unless the musician is practicing or playing for more than a few hours each day, and only seems to develop after a few years of serious playing. Thus, when not infected or otherwise problematic,<unk>  may be known as a benign practice mark and may be worn proudly as an indication of long hours of practice. Blum & Ritter (1990) found that 62% of 523 professional violinists and violists in West Germany experienced<unk> , with the percentage among violists being higher (67%) than among violinists (59%). Viola players are believed to be more predisposed to developing<unk>  than violinists because the viola is larger and heavier, but this has not been empirically confirmed. The development of<unk>  does not depend on preexisting skin problems, and Blum & Ritter find that only 23% of men and 14% of women in their study reported cutaneous disorders in other parts of the face (mainly acne and eczema) that were independent of playing the violin or viola.<unk>  may exacerbate existing acne, but acne may also be limited solely to the lesion and not appear elsewhere. Nonetheless, musicians with underlying dermatologic diseases like acne and eczema are more endangered by<unk>  than others. Males may develop folliculitis or boils due to involvement of beard hair.
Fiddler's neck
Cradle cap
Golfer's elbow
Barrel chest
Maddox wing
Saber shin
Burn center
Cramp-ring