II. Causes: Pigmentation Disorders
III. Causes: Brown discoloration
- See Brown Skin Lesion (or Black Skin Lesion)
- See Diffuse Hyperpigmentation
- Melanism
- Hemosiderin (Hemochromatosis)
- Wilson's Disease
- Venous Stasis Dermatitis
IV. Causes: Blue-Gray discoloration
- Silver (Argyria)
- Arsenic
- Alkaptonuria (Ochronosis)
- Gold (Chrysoderma)
- Amiodarone
- Minocycline-Induced Hyperpigmentation
V. Causes: Yellow discoloration
- Jaundice
- Carotenemia
- Medications (Quinacrine)
- Explosive manufacture (Dinitrophenol, Tetryl)