1, eczema: rash in many forms, can be repeated, on the one hand, need to clarify the causative factors, on the other hand, can be used externally glucocorticoids, such as dinaide cream, hydrocortisone butyrate cream, etc.; 2, prickly heat: a common acute skin infection in summer, caused by the blockage of sweat pores, mostly in the head, forehead, chest and back, etc., at this time can be rubbed in the affected area prickly heat powder or anti-itch cream to stop itching; 3, papules Urticaria: Mostly red bumps or bumps, with varying degrees of itching, which can generally subside within 24 hours. Topical application of glyburide lotion and oral administration of second-generation non-sedating antihistamines, such as levocetirizine, loratadine, etc. can be used. 4. insect bite dermatitis: mostly manifests as fusiform wind-blossom-like papules with small blisters in the center, topical glucocorticoid preparations, such as trimethoprim econazole cream, dextran cream, etc. can be used. 5. allergy causes: allergen testing is needed to find allergens and avoid re-allergy. If the red bumps and itching symptoms cannot be relieved for a longer period of time, or accompanied by fever symptoms, it may be due to chicken pox, scarlet fever, measles, etc. The condition is more dangerous at this time, so you should immediately go to the hospital for medical treatment.