cheilitis

Cheilitis is inflammation of the lips.(1-2)

Its types can be either acute or chronic. Most cheilitis is caused by acute sun exposure. Allergic tests may identify allergens that cause cheilitis.

Chapped lips (also cheilitis simplex or common cheilitis) are characterized by cracking of the lips.Lower lips usually gets inflammed. There may also be burning or the formation of large, painful cracks when the lips are stretched. Chronic cheilitis simplex can progress to crusting and bleeding.

Counterintuitively, ...