The actual painful hip pimples are likely to be folliculitis, infectious molluscum contagiosum, and erythema nodosum, as follows: 1. Folliculitis: caused by Propionibacterium acnes infection, mostly occurs in endocrine disorders in young and strong men or women. The patient’s hair follicles, sebaceous ducts blocked, the contents can not be metabolized normally, causing pain related to the surrounding inflammatory reaction; 2, infectious molluscum contagiosum: due to infectious molluscum contagiosum virus infection, can cause a certain itching, the patient excessive scratching after the local inflammatory reaction, can cause pain; 3, erythema nodosum: due to bacteria, viruses and other microbial infections, as well as immune dysfunction caused by lipid Erythema nodosum: due to bacterial, viral and other microbial infections, as well as immune disorders caused by lipiditis can cause pain.