Chicken skin is also known as perifollicular keratosis, and the occurrence of this disease may be related to genetic factors, vitamin deficiencies, and other diseases. 1. Genetic factors: It is currently believed that the occurrence of keratosis pilaris is related to autosomal dominant inheritance, that is, if one of the parents has the manifestation of keratosis pilaris, there is a 50% chance that the child will inherit it and thus develop this manifestation. 2. Vitamin deficiency: If the body is deficient in vitamin A, the manifestation of perifollicular keratosis may also occur. 3. Other diseases: Keratosis pilaris is usually associated with other diseases that can lead to dry skin, such as ichthyosis, atopic dermatitis, etc., and is a concomitant symptom. Keratosis pilaris generally does not affect the health, no special treatment, if you feel that it affects the aesthetic appearance, you can go to the regular hospital, for appropriate treatment.