Darkening of the face is mainly caused by localized pigmentation of the skin. Possible triggers include sunburn, facial skin diseases, internal diseases, and post-infectious hyperpigmentation.
1. Sunburn: sunburn is the most common cause of darkening of the face, because ultraviolet radiation may lead to a variety of skin problems (such as skin photodamage, solar dermatitis, polymorphic sun rash, etc.), when the melanocytes in the basal layer of the skin in order to protect the skin from further damage, will secrete more melanin to protect the skin, which leads to localized melanin pigmentation of the skin, the symptoms of the face darkening.
2. Facial skin diseases: Impaired skin barrier function, clogged pores, acne, sensitive redness and other facial skin problems may cause localized pigmentation on the face, resulting in darkening of the face.
3. Internal diseases: Adrenal diseases (such as Addison’s disease), liver and kidney diseases and other internal diseases can lead to abnormal pigment metabolism in the body, which can cause localized hyperpigmentation on the face, leading to the occurrence of darkening of the face.
4. Post-infection pigmentation: facial skin inflammation, infection, etc. If not standardized treatment, care, excessive scratching, repeated prolongation, etc., may lead to lesions of local pigmentation, resulting in the face darkening.
To summarize, it is recommended that patients with darkened face go to the hospital to clarify the cause of the disease and timely treatment to avoid further aggravation of the condition.