Cheilitis can occur due to reccurent wetting of the lips with your tongue/saliva as a result of habits/ or due to excess of spicy food, etc. This is more common in atopic individuals. You must consult a qualified dermatologist in detail to discuss the history, also make sure, that you are not suffering from anaemia/
vitamin deficiencies.
You could see a qualified dermatologist near you or send in details on follow up chat. Warm regards. Dr Govind Suresh Mittal, Bengaluru