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A member asked:
Can too much mouthwash cause ulcers (blisters) in the mouth? or are they from viruses?
3 doctors weighed in across 2 answers
It's possible: Blisters, erosions and sores in the mouth can be caused by many different things. Some are contagious (herpes simplex virus) and many are not (canker sores, lichen planus, pemphigus vulgaris). Mouthwashes can be very harsh on the sensitive mucosa in the mouth and can lead to ulcers/erosions. Have this checked out to find the exact cause as this is important for long term treatment decisions.
Answered 11/28/2018
5.7k views
Yes: The alcohol and phenol in some mouthwashes as well as the aromatic oils can cause blisters in some people.
Answered 8/30/2012
5.6k views
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