Face and Hypopigmentation
In children the commonest causes are pityriasis alba, a mild form of atopic eczema. The skin is never completely white in this condition. Segmental vitiligo can cause a localised pigment loss that has been present since birth. Ordinary vitiligo tends to be localised around the eyes and around the mouth. Pityriasis versicolor,a yeast infection, may involve the neck or chin area giving mild pigment loss Loss of pigment can also be due to scarring from liquid nitrogen application with damage to the melanocytes.In tropical countries Tuberculoid Leprosy can present as an area of hypopigmentation with reduced sensation within it
Management- If scaly scrape and send for microscopy and culture for fungus.
SIGN DIP MEN Overview of Hypopigmentation
S-Squamous Healing areas of eczema and psoriasis,Pityriasis alba,Pityriasis versicolor,Post discoid lupus erythematosus scarring,Tinea corporis,
I-Infective Pityriasis versicolor,Tuberculoid Leprosy,Pinta,
G-Granulomatous Sarcoidosis,
N-Neoplastic Morpheic Basal cell skin cancer,Epidermodysplasia verruciformis,
D-Drugs Phenols,Hydroquinone
I-Immunological Vitiligo,Halo nevi,Localised Morphea,Lichen sclerosus
P-Physical Following liquid nitrogen,Post traumatic in dark skin,Idiopathic guttate hypomelanosis,Chronic radiodermatitis,
M-Metabolic
E-Endocrine
N-Nutritional
Others- Genetic Albinism,Piebaldism,Hermansky Pudlak,Chediak Higashi,Prader Willi,Klein Wardenburg syndrome,Voigt-Koyanagi syndrome,Ashleaf macules of Tuberous sclerosus,Nevus depigmentosus,Nevus anemicus,
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