Having pimples may be caused by acne, folliculitis, atopic dermatitis and other diseases, which can be improved by general treatment and medication. 1. Acne: If acne is the cause of pimples, patients should eat a light diet and less oily, high sugar and high fat food. You can follow the doctor’s instructions to use topical adapalene gel, retinoic acid cream and other retinoids, which can regulate cell differentiation. You can also use antibiotics such as erythromycin and clindamycin as prescribed by the doctor. 2. Folliculitis: Folliculitis can also lead to acne, patients should pay attention to local cleanliness, not squeeze, knead the affected area. If the bacterial infection caused by folliculitis, you can follow the doctor’s prescription of topical antibiotics, such as mupirocin, erythromycin, etc.; if it is caused by fungal infection, you can follow the doctor’s prescription of topical miconazole, ketoconazole and other antifungal drugs. 3. Atopic dermatitis: acne may also be caused by atopic dermatitis, patients should avoid re-exposure to allergens, try to wear loose clothing. Can be prescribed topical glucocorticoid drugs, with anti-inflammatory, anti-allergic effect, common hydrocortisone, trimethoprim and so on. There are more reasons for having acne, it is recommended to go to the regular hospital, with the doctor standardized treatment.