The difference between keratosis pilaris and folliculitis includes causes, symptoms and treatment. 1. Causes: The causes of keratosis pilaris may be genetic, vitamin deficiency and metabolic disorders; the causes of folliculitis are mostly related to pathogen infection of hair follicles, trauma and other factors. 2. Symptoms: Perifollicular keratosis is characterized by normal skin color or reddish pimples, chicken skin-like appearance, and roughness to the touch. Folliculitis is mainly manifested as red papules or pustules centered on hair follicles. 3. Treatment: patients with perifollicular keratosis pilaris can apply salicylic acid, retinoic acid and other drugs as prescribed by the doctor, which can dissolve keratin. When the lesions are heavy, you need to follow the doctor’s prescription oral vitamin A and other drugs; bacterial triggered folliculitis patients need to follow the doctor’s prescription external mupirocin, erythromycin and other antibiotic drugs, fungal triggered by folliculitis, you need to follow the doctor’s prescription to apply ketoconazole, terbinafine hydrochloride and other antifungal drugs. The difference between keratosis pilaris and folliculitis is more, it is recommended to go to the regular hospital, consult the doctor to understand the relevant matters.