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Runner's rump is a cutaneous condition characterized by a small ecchymoses in upper gluteal cleft caused by constant friction with each stride when running.
- ^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. p. 1371. ISBN 1-4160-2999-0.