Diseases Understanding Hyperpigmentation: what are Causes, Types, Symptoms, and Proven Treatment Options for Clearer, Radiant Skin. Hyperpigmentation pharmstudy.co.inJul 17, 2023Aug 27, 20231 Comment on Understanding Hyperpigmentation: what are Causes, Types, Symptoms, and Proven Treatment Options for Clearer, Radiant Skin.