Chicken skin generally refers to keratosis pilaris, which may be caused by heredity, endocrine disorders, vitamin deficiency and other factors. 1. Heredity: Keratosis pilaris is predominantly autosomal dominant, and if there is a family history of keratosis pilaris, the likelihood of the disease is higher than that of the general population. 2. Endocrine disorders: If you suffer from hypothyroidism, Cushing’s syndrome or the long-term use of glucocorticoids for treatment of the disease, it may lead to skin damage, which may also lead to the occurrence of this disease. 3. Vitamin deficiency: if the body lacks vitamin A, etc., vitamin B, can also lead to suffer from this disease. There are many causes of keratosis pilaris, patients are advised to go to the local hospital for examination and pay attention to skin hygiene on a daily basis.