Small blisters on the corners of the mouth may be caused by herpes simplex, perioral eczema and other diseases.
1. Herpes simplex: blisters appearing at the corners of the mouth, with obvious localized burning and pain, are considered to be related to herpes simplex, which is caused by herpes simplex virus type I infection. Most of them can be diagnosed clinically, if necessary, combined with laboratory tests. If it is herpes simplex, the examination can find herpes simplex virus antibody positive.
2. Perioral eczema: small, symmetrically growing blisters on both corners of the mouth, accompanied by significant itching and oozing of fluid after rupture, are considered to be related to perioral eczema. Perioral eczema is a disease triggered by localized adverse stimuli and allergies.
It is recommended to take good care of the local area and go to the dermatology department of the regular hospital in time.