Dark or brown spots occur due to exposure of skin to the sun and that causes excessive production of melanin which turns the skin to darker. These spots are also known as sun spots (caused due to sun exposure), age spots (caused due to aging) or hyper-pigmentation.
This appears mainly on the areas like face, neck, back, chest, shoulders, hands and legs where it is easily exposed to sun, dirt or impurities and can be seen most commonly in adults of above 40 years. Hormonal imbalance, stress, vitamin deficiency, aging, acne, weak functioning of body parts are some of the factors causing black or dark spots on the skin. Continue Reading at Diyremedies