“Can a virus cause blisters in your mouth?”

Yes absolutely. Viruses are one of the reasons of blisters in the mouth

Yes

There are several viruses that are well known for causing blistering in and around the mouth. It is the most likely cause of blisters in the mouth, particularly when there are several

Yes. Virus can cause blísters.

Thanks for the question. Many viruses cause mouth blisters. The most common are Herpes simplex (cold sores) and Coxsackie (hand, foot, and mouth), but there are other illnesses to consider. Please see the pediatrician.

Yes especially herpes and hand foot and mouth disease

Yes, a virus can cause blisters in the mouth, and blistering viral diseases are not uncommon in children. Most commonly, there is a virus called coxsackievirus that causes a disease called “hand, foot, and mouth disease.” Children with this disease have small blisters, mostly in the back of the throat, and often have little bumps on their palms and/or their soles. But sometimes it occurs without the hand and foot bumps. Fever is sometimes present, but usually not too high. Another important blistering mouth virus is herpes virus. The same virus that causes cold sores. Sometimes on the first outbreak, instead of just getting a cold sore, a child can get many blisters and be pretty miserable. Usually they are both outside and inside the mouth. The pain can be severe enough that it is hard for them to eat properly. If your child has a high fever and is having a hard time eating and has many blisters, he or she should probably go see a doctor. If, on the other hand, it is smaller blisters mostly in the back of the throat and there are also bumps on the hands or feet, and the fever is only a little bit up, he or she could be watched at home.

Randall Fisher, M.D.

Yes, a number of viruses can cause blisters (we call them vesicles) in the mouth. Most are self-limiting, but if accompanied by fever, skin rash, and overall a really sick kid, you should see your pediatrician.