Skin patches that become darker in colour than the surrounding normal skin are known as hyperpigmentation, which is a frequent and typically harmless condition. This darkening happens when deposits of melanin, the brown pigment that gives skin its usual colour, accumulate in the skin. Hyperpigmentation often takes the shape of age or "liver" patches. They are known as solar lentigines by doctors and are caused by sun damage. Usually, you can find these tiny, darker spots on your hands, face, or other locations that are frequently exposed to the sun. Skin colour changes might be the result of external factors. For instance, if a skin problem like acne clears up, dark spots may remain. Skin injuries, including some procedures, are other causes of dark patches. Small brown spots known as freckles can form everywhere on the body, but they most frequently appear on the face and arms. It is hereditary to have freckles.