Dark spots on legs may be caused by post-inflammatory hyperpigmentation, stasis dermatitis, birthmarks and other factors, and may also be caused by other diseases such as congenital nevi.
1. Post-inflammatory hyperpigmentation: post-inflammatory hyperpigmentation is caused by acute inflammation or chronic inflammation of the skin, and the main symptom of patients is the appearance of local pigmentation spots on the skin, and some of the patients will have a deepening of the color after sun exposure.
2 stasis dermatitis: stasis dermatitis is mainly related to microvascular lesions and chronic inflammation, patients will appear eczema-like lesions, the skin is dark brown and other symptoms, there will be oozing, vesicles, scabs and other symptoms.
3. Birthmarks: Birthmarks may be caused by a large amount of pigmentation, or they may be caused by aggregation of blood vessels, vascular malformations and so on. Possible birthmarks are salmon spot birthmark, Mongolian spot birthmark, cafe au lait birthmark, etc. Nevus of Ota, pigmented nevus, etc. may also appear.
4. Other: natural pigmented nevus, melanoma and other diseases can also lead to the phenomenon of dark spots on legs.
When patients have the symptoms of dark spots on legs, they should seek medical treatment in time and follow the doctor’s advice.