Men’s lower epidermis is a little swollen may be acute injury, infectious factors, allergic factors, its treatment is mainly based on drug therapy, different causes, the use of drugs are different, including mupirocin ointment, clotrimazole ointment, tacrolimus ointment and so on. 1. Acute injury: for acute injury caused by the lower epidermis is a little swollen, should maintain the lower body hygiene, and external mupirocin ointment and other medication, most of them can be restored. 2. Infectious factors: such as fungal infection or bacterial infection, may lead to male lower body ectodermal a little swollen, there are bacterial infection, can use erythromycin ointment, mupirocin ointment and other drugs for treatment. When there is a fungal infection, you can use clotrimazole ointment, terbinafine ointment and other drugs for treatment. 3. Allergic factors: when there are allergic factors, will also induce swelling of the lower body, may also be accompanied by intense itching, can be used externally glycerine lotion, tacrolimus ointment and other medications, serious need to take oral cetirizine, loratadine and other antihistamine treatment. To summarize, if the boys lower epidermis a little swollen should be timely medical treatment. During the treatment, we should follow the doctor’s instructions, rational application of drugs, do not unauthorized use of drugs.