Acanthosis Nigricans symptomsAcanthosis Nigricans
Hyperpigmentation is a condition that causes the skin to darken. It can occur in small patches or cover large areas of the body.
Cyanosis is condition in which a person develops a bluish tint to the skin, fingernails, and fingertips. It's caused by not having enough oxygen in your blood and can occur suddenly or over time due to chronic illness.
Skin tags are small, harmless growths on the skin, usually the same color as the skin or darker. They often grow on neck, breasts, groin, stomach, eyelids, and underarms.