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Hello, this is Dr. David. I am reviewing your question now and will be with you momentarily.
this sounds like angular cheilitis which can come from lack of vitamins or poor nutrition and lack of sleep and fluids in your diet.
you need to take a multivitamin daily and also to eat more fruits and vegetables.
eating an orange and broccoli daily can help
drinking more water and fluids and getting more sleep can help as well
let me know if you have questions.