What Causes Hyperpigmentation and Why Dark Spots Develop
What Is Hyperpigmentation? Hyperpigmentation is a general term for areas of skin that appear darker than the surrounding tissue. It develops when the skin produces or deposits more melanin in certain areas. Melanin is the pigment that gives skin, hair, and eyes their color. It also helps protect the skin from ultraviolet radiation. When melanin production becomes uneven or increases in response to certain triggers, visible dark spots or patches can develop. Sun Exposure Is a Common Trigger Ultraviolet exposure is one of the most common contributors to pigmentation changes. Sunlight can stimulate melanocytes, the cells responsible for producing melanin. Over time, repeated exposure may lead to uneven pigment distribution and visible sun spots. This is why pigmentation often appears on frequently exposed areas such as: Face Hands Shoulders Chest Forearms Sun exposure can also make existing discoloration appear darker or more persistent. Inflammation Can Leave Pigment Behind Inflamm...