Vitamin A and B group deficiency
Yes, yes, yes, you will have to approach the solution of the issue thoroughly, you cannot do without passing the tests. Make sure you are not deficient in vitamin A, B vitamins; if there is, then the lips will be dry for a long time. For example, according to Dr. Berg, a well-known specialist in nutrition and the keto diet, dry lips and cracked corners of the mouth are caused by a lack of vitamin B2 in the body. It is found in eggs, lettuce, greens, nuts, dairy products, red meat, and fish.