Itchy bumps on the back of children may be eczema, prickly heat, folliculitis or acne and other diseases. 1. Eczema: Eczema is a chronic, inflammatory, itchy skin disease, which may be caused by abnormal immune function, systemic diseases and allergies, etc. It can be treated with hydrocortisone and dexamethasone cream. 2. Prickly heat: Inflammatory skin disease caused by the blockage of sweat ducts due to hot and humid environment and underdevelopment of sweat ducts, etc. Prickly heat powder can be used to cool and relieve itching, and the indoor temperature can be kept cool to avoid sweating. 3. Folliculitis: Inflammation of the hair follicles due to bacterial, fungal and other pathogens, can be treated with mupirocin ointment, ketoconazole cream and other drugs. 4. Acne: Inflammation of the sebaceous glands of the hair follicles due to increased androgen levels and sebaceous gland secretion in the body, resulting in secretions clogging the pores, and can be treated with medications such as retinoic acid and benzoyl peroxide. All of the above drugs should be used under the guidance of a doctor. Parents should take their children to the hospital for examination when there are small bumps on their backs, to clarify the cause of the disease, and follow the doctor’s instructions for standardized treatment.