Blisters on the upper lip should first be checked for the cause, which is commonly seen in herpes labialis, hypersensitivity reactions, boils and canker sores, which need to be treated with medication or surgery accordingly.
1. Herpes labialis. Blisters on the upper lip are most commonly seen in herpes labialis caused by herpes virus infection, usually visible, with several small pinpoint-sized blisters on the lips, followed by erosion. Treatment is usually with antiviral drugs (acyclovir, ribavirin).
2. Hypersensitivity reaction. It is due to contact with allergens or eating allergic food, lips can appear swelling, blistering, erosion, should immediately find the allergens and stop contact, and then use loratadine and other anti-allergy drugs.
3. Canker sores. Boils and carbuncles are folliculitis caused by inflammation of the hair follicles, usually seen as pustules filled with pus, severe pain, pustules are not fully matured before the use of penicillin, erythromycin ointment can be applied locally, pustules can be matured to the hospital for surgical incision and drainage of pus.
The blisters on the upper lip need to be diagnosed according to the history, clinical manifestations and laboratory tests to deal with, it is recommended to go to the hospital as soon as possible, the use of medication need to follow the doctor’s instructions.