Men encounter the situation of blisters on the glans, while it may also be accompanied by itching, pain and other symptoms will feel anxiety and fear, here we introduce the common clinical factors that cause blisters on the glans, as follows: 1, external injury: external force leads to damage or necrosis of the skin, edema and thinning of the skin, the formation of blisters. 2, glans circumcision: gonococcus, fungus, chlamydia, mycoplasma and trichomonas can lead to glans circumcision, blisters and itching, it is recommended to take medication for the symptoms. 3, genital herpes: sexually transmitted diseases caused by the herpes simplex virus, the general glans and coronal sulcus can appear blisters, and accompanied by itching. 4, allergy: contact dermatitis, due to local contact with allergic substances stimulation, such as condoms, ointments, etc. lead to allergies appear blisters. 5, drug rash: certain drugs such as sulfonamides and antipyretic and analgesic drugs can lead to drug rash-like blisters on the penis and glans. All of the above diseases can lead to blisters on the glans, if you encounter such cases should be taken seriously, timely medical treatment, do not go to the pharmacy to buy ointment for private diagnosis, so as not to delay treatment, causing urinary tract infections, affecting urinary and reproductive health.