White patches on the back of the neck may be related to the appearance of nevus aphakia, vitiligo, lichen planus and other factors.
1. Nevus pigmentosus: nevus pigmentosus is an extremely rare congenital limited white spots, mainly occurring in the trunk and limbs near the trunk, mainly manifested in the skin with different sizes of white patches, may be in the embryonic process of melanocyte development or melanosomal transfer disorders and other causes of local skin coloring abnormalities. Generally no pigmented nevus does not need special treatment.
2. Vitiligo: This disease is related to heredity, mental factors, autoimmunity, etc. It is a relatively common acquired pigmented skin disease, manifested as limited or generalized skin and mucous membrane pigmentation, due to the disappearance of the skin’s melanocyte function. Generally, it can be treated by laser irradiation or oral prednisone and other drugs.
3. lichen planus: a mild, usually asymptomatic chronic fungal infection of the stratum corneum of the skin, lesions often appear some yellow-brown spots or small white spots. Patients can take oral itraconazole, fluconazole and other antifungal drugs under the guidance of the doctor for treatment, but also external ketoconazole cream, clotrimazole cream, peroxybenzoyl gel and other drugs for topical treatment to improve symptoms.
White patches on the back of the neck may also be related to melanin loss, external trauma and other factors, patients are advised to actively consult the doctor for relevant examinations to clarify the cause of the disease before treatment. The use of medication should follow the doctor’s instructions.