Itchy bumps in summer may be caused by insect bite dermatitis, contact dermatitis and corn rashes. It is recommended to pay attention to skin care, external anti-itching drugs, oral antihistamine drugs and other treatment. 1. Insect bite dermatitis: summer weather is hot, wearing less clothes, mosquito bites, resulting in skin pimples, accompanied by intense itching. Glycolite lotion can be used externally, oral loratadine, cetirizine, etc. to help relieve itching; if necessary, glucocorticoid creams such as dexamethasone acetate can be used externally under the guidance of a doctor. 2. Contact dermatitis: contact dermatitis is related to contact with allergens, which can lead to skin erythema, papules with itching. It is recommended to get rid of the allergens, use topical mometasone furoate cream, tretinoin cream, etc., and take oral chlorpheniramine, loratadine and other medications. 3. Corn Rash: Corn Rash is also known as prickly heat, which is related to the hot environment and sweat cannot be discharged in time, and it can appear small bumps on the skin with itching. It is recommended that patients get out of the hot environment, keep the skin dry, use prickly heat powder, glycerite lotion, etc., severe itching can be oral cyproheptadine, loratadine and other drugs. It is recommended that patients with itchy pimples in the summer go to the dermatology department of a regular hospital in a timely manner, under the guidance of a doctor to standardize the use of medication. In daily life, we need to pay attention to skin care, avoid scratching stimulation, resulting in bacterial infection.