The role of patch and photopatch tests in facial melanoses: A cross-sectional, observational study

Background: Facial pigmentation includes various entities such as melasma, lichen planus pigmentosus (LPP), and pigmented contact dermatitis. The pathogenesis may involve certain allergens, which be responsible for causing a disturbance in the dermoepidermal junction. elimination of inciting allergens aid successful treatment these patients. Objective: aim was to detect with patch photopatch testing facial pigmentary disorders. Methods: Fifty patients disorders were enrolled. After taking demographic profile detailed clinical history performing an examination, done using common suspected allergen series. Results: Out fifty tested, 28 (56%) showed positive test, while 2 (4%) test. most found fragrance mix 17 (34%) patients, followed by paraphenylenediamine (PPD) 11 (22%). Other showing positivity nickel sulfate, benzocaine, parthenium, benzophenone-3, octyl methoxycinnamate, etc. Conclusion: Patients have underlying component dermatitis, causative or aggravating factor. avoidance help increasing efficacy