A circle of redness around the lips is considered to be related to physiological factors such as friction and licking, and may also be related to diseases such as perioral dermatitis, xerostomia and keratitis.
1. Physiological factors: rubbing the local hand or licking the local tongue can lead to a circle of red around the lips.
2. Perioral dermatitis: the main symptom is erythema and pimples appearing around the mouth and chin, etc. The cause of the disease is still unclear, and it may be related to the external use of glucocorticoid drugs and fluoride toothpaste.
3. Lipitis: clinical manifestations for the swelling of the lips, redness and oozing and other symptoms, some patients will appear around the lips of a circle of red. The cause of the disease is not clear, and may be related to sun exposure, contact with allergens and other factors.
4. Keratitis: Typical symptoms are congestion, redness, swelling and erosion of the corners of the mouth and adjacent areas, and some patients may have symptoms of redness around the lips. The cause of the disease is mostly related to infection, trauma and malnutrition.
There are many causes of redness around the lips, and after excluding physiological factors, it is recommended that patients seek medical examination to clarify the cause of the disease.