There are other possible causes of lip blistering, such as angular stomatitis and oral ulcers. Keratitis is inflammation of the skin around the lips, usually caused by vitamin B deficiency, infection and allergies. When the lip skin is inflamed, we can use some anti-inflammatory drugs, such as topical hormones or oral antibiotics. In addition, oral ulcers can also cause blistering of lips, which is usually caused by immune system defects and needs to be treated with the help of doctors.
In addition, lip blistering may also be an early symptom of some serious diseases. For example: pemphigus, stomatitis Sjogren's syndrome, etc. Pemphigus is a rare autoimmune disease, which usually manifests as a big blister on the skin and will spread within a few hours. Oral inflammatory Sjogren's syndrome is an immune system disease, which can cause dryness, blistering and pain of lips. If blistering of the lips is an early manifestation of these diseases, you need to seek medical attention in time.