Itchy bumps on the body after a long period of time without bathing may be due to clogging of pores with oil or dirt, which affects the skin’s metabolism. Itchy bumps may be caused by grease and dust attached to the skin for a long time, blocking the pores, bacterial infection, thus affecting the metabolism of the skin, which may cause folliculitis, resulting in itching, pimples and so on. Usually should pay more attention to their own cleanliness and hygiene, change clothes, often bathe, keep the skin clean and dry, enhance the skin’s ability to resist, reduce the risk of skin disease. When the itching is serious and the rash is more, it is recommended to go to the hospital in time to clarify the cause of the disease and give symptomatic treatment under the guidance of the doctor.