Hard pimples on the chin can be caused by sebaceous cysts, acne, and folliculitis.
1. Sebaceous cysts: Sebaceous cysts are cystic swellings formed when sebum is not excreted and accumulates together due to obstruction of the excretory ducts. The main manifestation is a spherical swelling under the skin, single or multiple, smooth surface, no fluctuation, squeeze the cysts can be extruded tofu dregs or face mud-like secretion.
2. acne: chin old hard pimples may be caused by acne, acne and sebum secretion increase, follicle sebaceous gland duct keratinization abnormalities and inflammatory reaction and other factors. Clinical manifestations are pimples, inflammatory papules, pustules, nodules and other symptoms.
3. Folliculitis: chin old long hard acne may also be related to folliculitis, folliculitis at first manifested as red papules, gradually turned into pustules self-conscious mild pain, and then scab, but there are recurrent episodes, generally do not leave a scar.
When the patient has the symptoms of hard pimples on the chin, it is recommended to go to the hospital in a timely manner and be diagnosed by a doctor.