Redness, swelling and blistering of the lips may be related to herpes labialis, mucous gland cysts, lip allergy and other causes.
1. Herpes labialis: infection of the lips with the herpes simplex virus leads to dense blisters on the lips or the surrounding skin, which may be accompanied by burning sensation, itching or tingling sensation, redness and other manifestations.
2. Mucous gland cysts: A thin sac containing clear fluid, usually mobile and painless, appears as a result of obstruction of the salivary glands caused by factors such as injury to the lips or inner mouth.
3. Lip allergy: Lip contact with allergenic substances such as lipstick or lip gloss can lead to an abnormal immune response in the body, resulting in red, swollen, painful, blistered lips and other symptoms.
It is recommended that people with red, swollen and blistered lips go to the hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.