Small bumps on the feet can be caused by eczema, athlete’s foot or papular urticaria. Doctors will take different treatment methods according to different causes, and the treatment methods include medication and so on. 1. Eczema: the pathogenesis of eczema is not clear, eczema is mainly manifested as erythema, papules, mossy changes with itching. Eczema can be treated with medication, including glucocorticoids, boric acid solution, esacridine solution, zinc oxide oil and so on. 2. Tinea pedis: Tinea pedis is a skin disease caused by fungal infection of the feet, and the skin will appear peeling, blisters, itching and other symptoms. Tinea pedis can be treated with medication, including econazole, miconazole, ketoconazole, bifonazole and so on. 3. Pemphigus urticaria: Pemphigus urticaria is caused by insect bites and manifests itself as a sudden onset of a pea- to fingertip-sized, windswept rash. Pemphigus urticaria can be treated with medication, which includes mometasone furoate cream and benadryl. If you feel unwell, you should go to the hospital in time to avoid delaying the condition or triggering adverse reactions.