Standardized Photographic Documentation of Hidradenitis Suppurativa/Acne Inversa

Background: Despite existing guidelines and methods for standardized clinical photography in dermatology and plastic surgery, human skin exhibits exquisite site-specific morphologies and functions, and each body region can exhibit an individual pathologic phenotype. The aim of this work was to develop a standardized, representative and reproducible documentation of the multilocular hidradenitis suppurativa/acne inversa (HS) lesions, a disease mostly occurring in skin folds. Method: Optimal body positions for medical photography of candidate areas for HS involvement were evaluated. Pictures of volunteers were taken, and indicative scientific graphics were designed. Results: Due to the variability of HS lesions and the fact of their localization in skin folds, a standardized, reproducible photographic documentation of HS candidate skin areas (50 cm from the skin surface) is proposed. The photographic series includes: (1) right armpit, (2) left armpit, (3) right groin, (4) left groin, (5) genital area, (6) anal area and anal fold, (7) right buttock, (8) left buttock, (9) chest area, (10) mons pubis, (11) right submammary area (females), (12) left submammary area (females). The protocol is accompanied with indicative scientific graphics for photography-proper positioning of the relevant body parts for documentation of potentially flat skin areas. In addition, former proposals for technical standardization of photography in dermatology, regarding instrumentation, environmental lighting and background colour, have to be respected. Conclusion: Standardized photography of candidate skin areas for HS involvement will allow longitudinal intraindividual and interindividual evaluation of the disease course as well as prospective and retrospective comparative studies.
Dermatology

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