Why is the lower back area on my back turning black?
Recently, I suddenly noticed that the skin on my lower back has become slightly darker. It feels normal to the touch, with no pain or itching. However, this dark patch looks quite unusual. I haven't bumped or injured that area recently, so why did it suddenly become darker?
Doctor's answer (1)
There are several possible reasons for darkening of the skin on the lower back area:
1. Poor hygiene habits: If one frequently neglects to bathe, it may lead to excessive accumulation of metabolic waste on the skin of the lower back, causing darkening of the skin. This condition is normal and typically reversible by improving hygiene habits.
2. Friction or pressure: Prolonged friction from clothing or pressure from items such as belts or backpacks may cause local skin pigmentation, resulting in melanin deposition and darkening of the skin.
3. Ultraviolet radiation: Long-term exposure to sunlight, especially without proper sun protection, can stimulate the skin to produce melanin under UV radiation, leading to skin darkening.
4. Endocrine disorders: Abnormalities in the endocrine system, such as hyperthyroidism or hypothyroidism, adrenal cortical dysfunction, and other conditions, may also cause changes in skin color.
5. Aging: With increasing age, skin function gradually declines, which may lead to pigmentation and darkening of the skin. This is a natural sign of skin aging and can be slowed through proper skincare.
