Blisters under the tongue may be caused by oral herpes, sublingual gland cysts, physical irritation and other reasons.
1. Oral herpes: Oral herpes caused by herpes virus infection may cause oral mucous membrane rash, blisters, ulcers, etc., which may cause blisters under the tongue.
2. Sublingual gland cysts: Damage to the sublingual gland, blockage of the ducts, and overflow of mucus may create the appearance of blisters under the tongue.
3. Physical irritation: not using too hot and spicy food may cause irritation of the mucous membrane under the tongue to appear as blisters under the tongue, or even ulcers, burning, pain and other symptoms.
Blisters under the tongue, there may be other reasons, need to go to the hospital in time to check, clear cause.