Very hard pimples on the chin are painful, this situation may be the development of folliculitis in the area, or localized boils, but also may be the development of sebaceous cysts in the area, and the secondary inflammatory infection. Therefore, this situation generally needs to be treated differently, because there are a large number of hair follicles sebaceous glands distributed in the area, and generally in the case of a decline in the body’s immune function, such as staying up all night, sleep deprivation, overexertion, as well as endocrine dysfunction, it may cause the infection of some of the conditionally pathogenic bacteria in the area, and ultimately the formation of some localized inflammatory reaction, and then a very hard pimple will appear, and in some cases, it may be accompanied by certain Some of them may be accompanied by some purulent manifestations. If pus, you need to go to the hospital in time for treatment, usually need to be incised to drain pus treatment, and also need to carry out anti-infection treatment.