There are black spots on the hands, hand pigmentation is common, such as solar keratosis, seborrheic keratosis, and hyperpigmentation after skin diseases.
1. Solar keratosis: if patients work for a long time under the sun, it will make the ultraviolet rays in the sun stimulate the tyrosinase in the melanin cells, thus promoting the acceleration of melanin synthesis and triggering solar keratosis, leading to the symptom of black spots on hands.
2. Seborrheic keratosis: its main cause and skin aging, genetic susceptibility and other factors related to the majority of adults over 40 years of age, may be induced by air pollution, viral infections, ultraviolet irradiation and other circumstances, the emergence of black spots on the hands phenomenon.
3. Hyperpigmentation after skin disease: if the patient has suffered from eczema, prickly heat and other skin diseases, when the condition recovers, the inflammation will stimulate the local melanin cells, resulting in hyperpigmentation and causing black spots on hands.
Black spots on the hands may also be related to other diseases, it is recommended that patients who have the will to be treated go to regular hospitals in a timely manner, and standardize the treatment after a clear diagnosis.