Hi..
Welcome to HEALTHCARE MAGIC..
As per your complain splits on the lips with a habit of lip licking during sleeping leads to evaporation of moisture from the lips leading to dryness causing chapping and
Chapped lips are the cause for cracking of the lips..
Due to cracking there is inflammation leading to pain..
Nothing to worry, before you sleep apply a thick coat of petroleum jelly over the lips.
Sip on water everytime you wake up at night.
Completely avoid licking or sucking the lips..
During the day also keep applying a coat of petroleum jelly or bees wax containing lip balm over lips, drink plenty of water, take
multivitamin supplements.
Exfoliate your lips atleast once a week using a mild scrub.
Limit sun exposure and always apply a SPF 15 containing lip balm when exposed to sun..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.