Seborrheic dermatitis is caused by the imbalance of sebaceous gland secretion, which belongs to exocrine. Pay attention to light diet at ordinary times. We can eat more cold foods such as radish, cucumber, bitter gourd and cabbage, or eat more fruits and less meat, including chicken, duck, fish, seafood and so on. Eating tenderloin is really hard. Usually pay attention to prevent sandstorm and dryness in spring, autumn and winter to avoid skin infection and recurrence. Don't expose your skin to the sun in summer.
If it is serious, go to see a doctor and suggest Chinese medicine to treat it with Chinese medicine. Don't use western medicine ointment containing hormones, it will get worse and worse, and it won't work in the end.
In short, if you have this disease, you should pay attention to protection at ordinary times.