It is caused by chronic exposure to the sun’s UV rays and poor oral hygiene may be another risk factor. Symptoms include dry chapped lips, thinning skin
on the lips, scaly patches, ulcers or crusting
on the lips, swelling of the lip, redness or soreness of the lips and loss of demarcation between the border of the lip and the surrounding skin. Any or some of these symptoms may be present in patients.
2) Second possibility is of cheilitis which is inflammation of the lips.