Red patches on the neck may be caused by nevus erythematosus, hemangioma, eczema and other reasons.
1. Nevus erythematosus: nevus erythematosus is a kind of congenital capillary malformation, which often appears at birth or soon after birth, the cause of which is still unclear, and manifests itself as light red, dark red, or purplish-red patches of varying sizes, which is generally effective after regular laser treatment and is not easy to recur.
2. Hemangioma: hemangioma is a congenital abnormal proliferation of blood vessels and vascular endothelium, which is a common congenital benign tumor in the skin and soft tissues, and the lesions are congestive, abrasive or capillary dilatation plaques, and with the progress of the disease, the color can be transformed from bright red to dark purple.
3. Eczema: eczema occurs in the exposed parts of the skin, such as the face, hands and feet, neck, etc., the cause of the disease is still unclear, manifested as erythema, papules, papules, etc., accompanied by itching.
Red patches on the neck may also have other causes (such as neurodermatitis, atopic dermatitis, etc.), it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, and comply with the doctor’s instructions for standardized treatment.