Facial dermatitis causing a lot of rashes is usually considered to be caused by allergies or infections, and can usually be treated by a doctor through general treatment and medication according to the cause and symptoms. 1. General treatment: To reduce external stimuli, avoid the use of irritating toiletries, do not use hot water to wash and scratch the affected area. Strengthen skin protection, avoid skin too dry or humid, appropriate rest, do not stay up all night. Drink plenty of water and avoid irritating and allergy-inducing foods. 2. Medications: For rashes caused by allergies, you can usually use topical medications such as glycerite lotion, zinc oxide ointment, hydrocortisone butyrate ointment, and if necessary, you can also take antihistamines such as loratadine and ibuprofen orally. If it is caused by infection, it can be treated with antibiotics such as penicillin and mupirocin. The use of medication should be strictly in accordance with the doctor’s prescription, if the symptoms are not relieved after the above treatment, you should seek medical treatment.