Hi, it is called angular cheilitis. It can be due to saliva getting accumulated at the corners of the mouth, poor oral hygiene, deficiency or minerals like iron, zinc etc
Next Steps
Try these home remedies.
1. Apply honey on the affected area and keep it for sometime.
2. Refrigerate a leaf of aloe Vera and rub it over affected area and let it dry for sometime and then wash it.
3. Use lip balms and moisturiser regularly.
4. Use terassil skin repair ointment on the affected area after drying the area and leave it for 15min. Repeat 2/3 times a day.
5.keep yourself hydrated. Drink atleast 10-12 glasses of water everyday.