The dimple sign or Fitzpatrick's sign is a dermatological sign in which lateral pressure on the skin produces a depression. It is associated with dermatofibroma.
References
↑Aradi, AJ; Wong, J.; Walsh, M. (1988). "The dimple sign of a ruptured lateral ligament of the ankle: Brief report". The Journal of Bone and Joint Surgery. British Volume. 70-B (2): 327–328. doi:10.1302/0301-620X.70B2.3126191. PMID3126191.
↑Naversen DN, Trask DM, Watson FH, Burket JM (February 1993). "Painful tumors of the skin: "LEND AN EGG"". J. Am. Acad. Dermatol. 28 (2 Pt 2): 298–300. doi:10.1016/0190-9622(93)70039-V. PMID8436643.
↑Zaballos P, Llambrich A, Ara M, Olazarán Z, Malvehy J, Puig S (February 2006). "Dermoscopic findings of haemosiderotic and aneurysmal dermatofibroma: report of six patients". Br. J. Dermatol. 154 (2): 244–50. doi:10.1111/j.1365-2133.2005.06844.x. PMID16433792. S2CID22308659.