Seborrheic dermatitis can be washed. Seborrheic dermatitis is a skin condition that occurs in areas of the scalp and the face where the cortex is highly secreted. Seborrheic dermatitis that occurs on the scalp is recommended to be washed more often and medication is recommended to cleanse it. It is generally believed that seborrheic dermatitis of the head will be accompanied by erythema of the scalp with significant flaking. It is believed to be accompanied by fungal infections, so you can use topical medications to wash your hair, such as coal tar lotion, ketoconazole lotion and so on, which have antibacterial ingredients; you can also use Chinese medicines such as dehumidification and anti-itch lotion or skin itch cream to wash. The seborrheic dermatitis shampoo is also an important method of treatment, along with the oral medication topical medication to carry out the treatment, the effect will be more obvious. The seborrheic dermatitis needs to avoid spicy, stimulating, fried, greasy food.