Elderly legs itchy scratch rotten may be eczema, contact dermatitis, neurodermatitis and other diseases. Patients need to take medication for the cause. 1. Eczema: Elderly legs itching and scratching may be due to eczema. If the patient has skin erosion, you can follow the doctor’s instructions to choose a cold wet compress, such as boric acid solution, esacridine solution. Or topical hydrocortisone, dexamethasone and other glucocorticoid drugs. If the itching is serious, oral antihistamine drugs, such as loratadine, cetirizine, etc.. 2. Allergic dermatitis: the old man’s legs itching and scratching may also be caused by contact dermatitis. Patients can follow the doctor’s instructions to use boric acid solution wet wound, external hormone ointment such as halometasone, if there is infection can be external antibiotic drugs, such as mupirocin ointment. As well as oral antihistamines, such as loratadine, cetirizine and so on. 3. Neurodermatitis: the old man’s legs itchy scratching rotten is also considered to be due to neurodermatitis. The patient oral antihistamine drugs, such as cetirizine, phenylephrine. There are many reasons that lead to the old man’s legs itchy scratching rotten, it is recommended that the patient to identify the cause of the disease, and actively cooperate with the doctor to take therapeutic measures. Drugs need to be used in accordance with medical advice, do not self-medication.