Swollen and itchy ankles with itching, may be mosquito bites, eczema, contact dermatitis and other diseases caused by the patient should consult a doctor in a timely manner to clarify the cause of the corresponding treatment. 1. Mosquito bites: swollen and itchy ankles may be caused by mosquitoes, bedbugs and other bites, mostly occurring in the summer, before the occurrence of more than to go to the grass, can be localized use of glycerite and other treatments. 2. Eczema: If the swelling and itching of the neck of the foot is bilateral symmetrical attack, and local polymorphic rash, should be considered to be caused by eczema, can use glycerol, hydrocortisone and other treatment. 3. Contact dermatitis: erythema, edema, itching and other symptoms appear in local contact with irritating or allergic substances. Swelling of the ankle with itching should be promptly consulted, and all the above drugs should be used under the guidance of a doctor.