Black patches like nevi on the scalp are considered to be caused by nevi, melanoma and other causes. For specific reasons, it is recommended that patients go to the dermatology department of the hospital for consultation.
1. Nevus melanogaster: nevus melanogaster leads to black patches or black plaques on the skin of the head, the cause of which is not yet clear, and may be related to genetic mutations during development. Generally, it does not need special treatment, but if it affects the beauty or has the tendency of malignant change, it is recommended to go to dermatology department for surgical excision.
2. Melanoma: malignant melanoma is a malignant tumor of melanocyte origin. Cutaneous melanoma manifests itself as pigmented skin lesions that change significantly over months or years. Its malignant symptoms include asymmetric shape, irregular margins, color change, enlargement, evolution or bulging, etc. Early non-metastatic damages should be surgically excised, and for those who develop extensive metastases, combined chemotherapy and radiation therapy can be used.
The black plaque on the scalp like a mole is recommended to consult a doctor in time to avoid delaying the condition.