My 4 year old constantly licks her lips. The skin around her lips on the top and bottom is so red and raw. Suggestions to heal or prevent bad habit?

A lip licking habit. Persistent dry or chapped lips is lip eczema, which can be treated like skin eczema, using Hydrocortisone cream, plus vaseline or aquaphor to retain moisture. Sometimes, lip sunscreen chemicals can cause an allergic reaction on the lips. Other times, a person is a primary lip-licker (it's his habit). Once cracked, lips get irritated by routine foods, juices, & saliva. A doctor can sort things out.