What are the causes of melasma on men's cheeks?

The causes of men developing melasma on their cheeks are diverse, mainly including: 1. Ultraviolet (UV) radiation: Prolonged exposure to strong UV rays can stimulate melanocytes in the skin, leading to excessive pigment deposition and the formation of melasma. 2. Hormonal imbalances: Long-term late-night habits, unhealthy lifestyle practices, or excessive intake of hormone-containing foods may disrupt the body's sex hormone balance, thereby stimulating melanocyte secretion and triggering melasma. 3. Genetic predisposition: Melasma exhibits a certain degree of familial clustering. If multiple family members have melasma, a man's risk of developing it may increase. 4. Chronic diseases and medication factors: Certain chronic conditions such as hepatitis and tuberculosis, as well as long-term use of hormone medications, may lead to increased tyrosinase activity and melanin production, resulting in melasma on the face. 5. Unhealthy lifestyle habits: Smoking, alcohol consumption, picky eating, and insufficient sleep can all affect the body's endocrine system and metabolism, leading to increased melanin production and the development of melasma.