The dense bumps on the body may have the following causes: a. Infants and young children with this condition have symptoms of fever about three to five days before the growth of bumps, and the bumps appear after the fever subsides, which is considered as early childhood emergency rash, caused by viral infection. Second, preschoolers with persistent fever, sore throat, red and swollen conjunctiva, red spots seen at the oral mucosa, and dense bumps appearing all over the body one after another after the fever subsides are considered measles. The condition is considered to be caused by allergy after medication or contact with or consumption of a substance in adults, so take oral or intramuscular injection of anti-allergy medication and stay away from allergens. 4. In the summer, when the weather is hot, a lot of sweating occurs and the sweat cannot evaporate in time, consider prickly heat on the skin. After bathing, use prickly heat powder to puff or rub the affected area with peppermint glutamate lotion, take oral antihistamines to stop itching, wear loose, cotton, breathable clothes, keep the room cool and go out as little as possible to help treat the condition.