There are many causes of skin bumps on the body: First, skin allergies, due to human contact with allergens on the skin to produce symptoms of erythema, pimples, and wind clusters, if the skin bumps are caused by allergies, we should clarify their allergens, avoid contact with allergens, and apply anti-allergy medication. Second, seasonal changes lead to excessively hot and dry environmental stimuli can cause skin rashes. For the treatment of eczema can be used anti-histamine drugs to stop itching, along with the use of lotions to relieve. Third, skin problems such as dermatitis may also trigger red bumps on the skin, and may also be due to their own oil secretion or mosquito bites and mental factors, to actively control the infection, the application of anti-inflammatory anti-itch drugs to relieve symptoms.