Its called Chelitis. Could be actinic chelitis also. Use flutivate E cream morning and night. Use chaptex lip balm every hour. Drink lot of water. Lips get chapped because of dehydration, sunlight and dust.
Next Steps
If doesn't subside meet Dermatologist
Health Tips
hydrate yourself and protect your lip with lio balm when you play under the sun. Avoid lip licking