Hyperpigmentation is a common and usually harmless condition that causes patches of skin to appear darker than the surrounding areas due to excess melanin production, which is the pigment responsible for skin colour. When there is an overproduction of melanin by specialised skin cells, it results in an uneven skin tone. Skin hyperpigmentation can occur superficially in the epidermis (the outer layer of the skin), deeper in the dermis (the middle layer of skin), or as a combination of both.





