Genital skin long tiny blisters itching rub what medicine need to be based on the cause of the symptomatic treatment. Generally consider genital herpes, genital eczema is more likely. You can use a combination of general care, lidocaine and other topical ointment and oral medication to treat the cause. 1. Genital herpes: the first genital herpes genitals or anus around the cluster or scattered small blisters, about 3 days to break to form vesicles or ulcers, conscious pain. Patients may have fever, fatigue and other systemic symptoms, local burning sensation, pins and needles or or itching before the onset of the rash, the symptoms are reduced after the rash appears. Treatment should be oral ganciclovir and other antiviral drugs. If the pain is obvious, topical lidocaine can be used for pain relief and so on. At the same time to keep the local clean, dry, every day with saline wash local disinfection and sterilization. 2. Genital eczema: genital eczema will also appear small blisters, at the same time feel the symptoms of itching, then mainly can be used externally with glycerine lotion astringent itching, if necessary, can be combined with hydrocortisone and other glucocorticosteroid treatment. The above drugs should be used in accordance with medical advice. There may be other reasons for the itchy blisters on the genital skin, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.