A dark brown spot in the middle of the forehead that spreads and itches is commonly associated with neurodermatitis or lichen planus. It is recommended to find a doctor for a clear diagnosis and treatment.
1. Neurodermatitis is easy to feel the local itching, can spread into different colors such as normal skin color, light brown or reddish polygonal flat papules of papules, and then fused with each other into a piece. The purpose of treatment is to stop itching, you can choose to take oral antihistamines, calcium, or local topical glucocorticoid ointment symptomatic treatment.
2. Mottled chaff rash, is a kind of skin disease that will change color, caused by fungal infection, the lesion will spread more and more big, the appearance can be white, brown, red. Common in the summer or humid and hot environment engaged in easy sweating workers, to young adults accounted for the majority. Treatment is based on topical antifungal drugs, and oral antifungal drugs can be added if the treatment is not effective.
It is recommended to consult a hospital and be guided by a doctor to use medication.