Sun Exposure and Its Effects on Skin — Lentigines
Lentigines, commonly referred to as liver spots or age spots, are a prevalent type of hyperpigmentation. These spots resemble enlarged freckles and have a flat, dark appearance with irregular shapes. The primary cause of lentigines is often attributed to the harmful effects of UV radiation, making them more likely to appear on areas of the body that are frequently exposed to the sun, such as the hands and face. Over time, age spots can become darker or more prominent when subjected to increased sun exposure, particularly as an individual ages. Although these spots are generally harmless, there is a potential risk of them developing into melanoma, a type of skin cancer.
Certain Medications Can Lead to Hyperpigmentation
Hyperpigmentation that affects the entire body is often a result of drug treatment or exposure to certain chemicals. Skin discoloration can be caused by various medications such as antimalarials, antibiotics, cancer chemotherapy drugs, and tricyclic antidepressants. Additionally, excessive iron in the blood or exposure to silver, gold, or mercury can also lead to hyperpigmentation. In certain cases, individuals may experience recurring drug reactions where they develop localized reactions that eventually progress into hyperpigmentation. Fortunately, most drug-induced hyperpigmentation tends to fade once the medication is discontinued, although there are instances where it may be permanent.