Raised rice grains on the hands may be infected with HPV, but also eczema, folliculitis and so on. 1. common warts: common warts are caused by human papillomavirus (HPV) infection, which can occur in any part of the body, mostly on the hands. The patient can appear pinhead to soybean size papules, surface rough, can be gray-brown, brown or normal skin color. 2. Eczema: caused by a variety of internal and external factors, patients may appear corn grain size papules, papules, blisters, often accompanied by obvious itching, easy to recur. 3. Folliculitis: it is an inflammation caused by bacteria and other pathogens infecting the hair follicles, and patients will have red papules centered on the hair follicles, which can be accompanied by certain pain when pressed. There are many reasons why there are raised rice grains on the hands, and it is recommended to go to the hospital in time to get a clear diagnosis, follow the doctor’s instructions, and actively cooperate with the treatment.