Dyschromia

*The article was translated into English using automatic translation. The editors are working on its improvement.
Skin dyschromia is a group of skin diseases in which changes in skin color occur. Skin color is determined by four pigments: brown - melanin, which is deposited mainly in the basal layer of the epidermis; yellow - carotene, which comes from food and accumulates in the keratinocytes of the epidermis; red - oxygenated hemoglobin, which ends up in the capillaries of the skin; blue - reduced hemoglobin (deoxyhemoglobin), which is found in skin venules.
