Small bumps all over the body like chicken skin, clinically known as perifollicular keratosis, this disease generally can not be cured, and will not be harmful to the body, there is a need for treatment, can be used through the topical medication (such as tazarotene gel, etc.) and oral medication (such as vitamin A, etc.), etc., in order to improve the symptoms. 1. Topical medication: patients can use tazarotene gel, retinoic acid ointment, salicylic acid ointment, etc. as prescribed by the doctor to soften or dissolve keratin, and use moisturizers as prescribed by the doctor to alleviate the dryness of the skin, and for those with redness or itching lesions, glucocorticosteroids such as hydrocortisone may be used in conjunction with the medication to control the condition. 2. Oral medication: Patients can take oral vitamin A or small doses of retinoids, such as isotretinoin or avitamin A, to improve symptoms. If there is a need for treatment, it is recommended to go to the hospital in time and follow the doctor’s instructions for standardized treatment.