Confluent and reticulated papillomatosis of Gougerot and Carteaud (also known as "Confluent and reticulated papillomatosis," "CRP", "CARP", "Familial cutaneous papillomatosis," and "Familial occurrence of confluent and reticulated papillomatosis") is an uncommon but distinctive acquired ichthyosiform dermatosis characterized by persistent dark, scaly, papules and plaques that tend to be localized predominantly on the central trunk.
Henri Gougerot and Alexandre Carteaud originally described the condition in 1927. The cause remains unknown, but the observation that the condition may clear with Minocycline  turned attention to an infectious agent. Actinomycete Dietzia strain X was isolated from one individual. Other antibiotics found useful include azithromycin, fusidic acid, clarithromycin, erythromycin, tetracycline and cefdinir.
^Odom, Richard B.; Davidsohn, Israel; James, William D.; Henry, John Bernard; Berger, Timothy G.; Clinical diagnosis by laboratory methods; Dirk M. Elston (2006). Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders Elsevier. p. 207. ISBN0-7216-2921-0.
^Natarajan S, Milne D, Jones AL, Goodfellow M, Perry J, Koerner RJ (October 2005). "Dietzia strain X: a newly described Actinomycete isolated from confluent and reticulated papillomatosis". Br. J. Dermatol.153 (4): 825–7. doi:10.1111/j.1365-2133.2005.06785.x. PMID16181469.
^Scheinfeld N (2006). "Confluent and reticulated papillomatosis : a review of the literature". Am J Clin Dermatol7 (5): 305–13. PMID17007541.