Suddenly a transparent blister in the mouth does not hurt or itch usually mainly burns, viral infections and mucous gland cysts, etc., once found need to consult a doctor in time for treatment.
1. If you accidentally eat too high temperature food in the process of eating, it is possible to scald the oral mucosa, which leads to the mouth to grow painless and itchy transparent blisters, under normal circumstances, blisters can be slowly eliminated on their own.
2. When the body’s resistance is low, the oral mucosa may produce herpes due to viral infections, which can be manifested as painless and itchy transparent blisters in the mouth.
3. If the glandular ducts in the mouth are blocked due to inflammation and infection or external trauma, mucous gland cysts may be formed, which may be manifested in the early stage of the disease as painless and itchy transparent blisters in the mouth.