Acanthosis nigricans describes a pattern of hyperpigmentation that results in dark and velvety patches of skin around the neck, armpits, groin, and other skin folds. This condition is almost always an indicator of some internal hormonal imbalance. There are five types of acanthosis nigricans. Read more to find out what they are and how they are treated.
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Although Seborrheic Keratoses are often confused with warts, they are quite different. Seborrheic keratoses are non-cancerous growths of the outer layer of skin. There may be just one growth, or many which occur in clusters.