Pigmentation Disorders

PigmentationDisorder

Increased pigmentationDiffuse hyperpigmentation: Carotenaemia Haemochromatosis

Endocrine pigmentation: Melasma Addisons disease Cushings syndrome Nelsons syndrome Chronic renal failure

Photoexposed site hyperpigmentation: Porphyrias

Drug-induced: Amiodarone Arsenic Bleomycin Busulfan Chloroquine Clofazimine Mepacrine Minocycline Phenothiazines Psoralens

Facial hypermelanosis: Freckles Lentigines

Decreased PigmentationVitiligo

Albinism

Pityriasis alba

Pityriasis versicolor

Idiopathic guttate hypomelanosis

Phenylketonuria

Hypopituitarism

Reference:

Davidson, S 2014, Chapter 28: Skin Disease, in BR Walker, NR Colledge, SH Ralston, ID Penman (eds.), Davidsons Principles and Practice of Medicine, Elsevier, China, pp. 1295-1296.