The most common cause of blistering (blistering) at the corners of the mouth is due to a viral infection. Commonly used ointments include acyclovir ointment, recombinant bovine alkaline growth factor gel, and gentamycin ointment.
Blisters at the corners of the mouth may be caused by a herpes simplex infection due to the herpes simplex virus, or a herpes zoster infection caused by the herpes zoster virus. In this case, the first thing to do is to apply acyclovir ointment locally to get to the root of the antiviral treatment. If the condition is more serious and there are systemic symptoms such as fever, some antiviral drugs can also be used systemically.
Secondly, the blisters at the corners of the mouth can also use some ointments to promote the recovery of the mucous membrane. Commonly used are recombinant bovine alkaline growth factor gel and so on.
In addition, if the blister at the corner of the mouth breaks down and becomes infected, you can also use some anti-infection ointment. Commonly used are erythromycin ointment, or gentamycin ointment and so on.
Of course, it is best to go to the hospital as soon as possible to ask the doctor to give the appropriate treatment plan.