What to do about massive seborrheic dermatitis on the back

Large seborrheic dermatitis of the back, mainly take general treatment, topical drug treatment, systemic drug treatment.
1. General treatment: usually keep a regular life, avoid staying up late, avoid eating spicy and greasy food.
2. Topical drug treatment: local use of glucocorticoid drugs, such as mometasone furoate cream, Dinaid cream; or calcium-modulating phosphatase inhibitors such as tacrolimus, pimecrolimus and other treatments.
3. Systemic medication: Itching can be treated with antipruritic sedatives; if fungal infection occurs, itraconazole, terbinafine and other antifungal drugs can be taken. If the scope is large, the inflammation is obvious, can be used for a short period of time in small doses of glucocorticoid drugs, such as prednisone, methylprednisolone and other treatment.
All of the above drugs should be used under the guidance of a doctor, and patients should not use the drugs on their own.