Pseudoatrophoderma Colli
Pseudoatrophoderma colli is an unusual papillary and pigmentary dermatosis of the neck in which the lesions appear atrophic. Kauh et al. (1980) described pseudoatrophoderma colli in 2 'Indian' (presumably American Indian) sisters and their father. Frost and Epstein (1939) described affected sisters.