Blisters on the gums may be caused by herpes gingivostomatitis, drug allergic stomatitis, contact stomatitis, etc., as follows.
1. Herpetic gingivostomatitis: caused by herpes simplex virus infection, manifesting itself in any part of the oral mucosa, especially the well keratinized parts, occurring in clusters of small blisters, like the size of a pinhead.
2. drug allergic stomatitis: the drug into the body leads to allergic reaction, and the mucosa and skin of the inflammatory reaction disease, oral lesions manifested as mucosal burning and swelling, followed by blisters, oozing, vesiculation and necrosis, etc., blisters can be single or multiple, varying in size.
3. contact stomatitis: is the allergic reaction to the body of the oral mucosa and allergen contact, the occurrence of allergic reaction, and caused by a kind of oral mucosal disease, manifested in the oral cavity localized formation of erythema, severe blisters, vesicles or ulcers.
Blisters on the gums may have other reasons, it is recommended to go to the hospital in time, clear cause for targeted treatment.