What is the definition of "atrophoderma"?

Atrophoderma is a rare disease that causes large skin lesions to appear on the body. The lesions can spread over a large area in a very short space of time before suddenly receding.

These lesions are marked by a slight depression of the skin with an abrupt edge, usually on the backs of adolescents or young adults. The affected skin appears thinned and discolored, but the consistency and texture of the affected skin remains normal. The disease can develop at any time, but it usually affects individuals between the ages of 30 and 60. The cause is unknown and it affects more women than men.