If patients with nephrotic syndrome are bitten by mosquitoes, they can apply erythromycin ointment for anti-infection treatment if it is only a general bite that causes infection; if it is a serious bite, they need to take chlorpheniramine maleate for anti-allergy treatment. 1. General bites: after being bitten, patients with nephrotic syndrome may cause inflammatory reaction, need to pay attention to local hygiene, at the same time can apply erythromycin ointment treatment, if necessary, it is recommended to receive regular review. Erythromycin ointment common adverse reactions are occasionally allergic reactions and irritation, contraindications are not yet clear. 2. Severe bites: If the mosquito bites are more serious, the bite site has more serious redness, swelling and hot pain symptoms, need to consult a doctor as soon as possible, if necessary, you can consider oral antihistamine treatment, such as chlorpheniramine maleate and ipratropium, etc.; at the same time, you can use the 3% boric acid lotion for cold wet compresses to ease the discomfort. The common adverse effects of chlorpheniramine maleate include dry mouth, nausea, dizziness and drowsiness, etc. It is contraindicated for those who are allergic to chlorpheniramine maleate, newborns, preterm infants and pregnant women. In addition, the application of the above drugs have certain risks, should be used under the guidance of a doctor, we recommend that patients go to the hospital, and follow the doctor’s instructions for symptomatic treatment.