Itchy bumps on the feet, common causes are: tinea pedis, eczema, contact dermatitis and so on. 1. Tinea pedis: mostly occurring on the soles of the feet and the skin between the toes, it is a superficial skin fungal infection of the feet caused by dermatophytes. Erythema, papules, blisters and scales may appear on the skin of the feet, accompanied by obvious itching. 2. Eczema: a chronic, inflammatory, easily recurring skin disease. If eczema appears on the feet, it can produce polymorphic skin lesions such as erythema, papules and mossy changes, accompanied by itching symptoms. If the bumps are scratched, there will be scabs as well as oozing. 3. Contact dermatitis: foot contact with allergens or irritants related to contact dermatitis can induce contact dermatitis, manifested as a clear boundary of the contact area of erythema, pimples, and accompanied by itching, burning sensation. In short, the itchy feet with small bumps cause more, it is recommended that the patient timely consultation and follow the doctor’s instructions for treatment.