Baby feet long raised bumps with small blisters, need to consider papular urticaria, eczema, tinea pedis and so on. 1. papular urticaria: most of the allergic dermatosis occurring after insect bites, such as mosquitoes, fleas, etc., in the local appearances of the windy pimples, lesions can have blisters at the top, you can orally cetirizine drops and other antihistamines, or topical itching medication, such as glycerine lotion. 2. Eczema: associated with a variety of internal and external factors, often induced by infection, endocrine, food, environmental changes and other factors, can also appear raised bumps, blisters, accompanied by itching discomfort. Through oral antihistamine drugs, or external glucocorticoid ointment can be relieved. 3. Tinea pedis: Fungal infections of the feet can cause localized itching and blisters, and tinea pedis in babies is usually spread through close contact with parents. Baby feet long bumps with blisters, it is recommended to take the child to the hospital as far as possible, to confirm the diagnosis and then treatment.