Itchy blisters on the top of the feet may be related to eczema, contact dermatitis, tinea pedis and other causes. 1. Eczema: the feet are affected by external stimuli and other factors, which can cause local skin erythema, on this basis, papules or mounds of herpes can appear, accompanied by itching symptoms. 2. Contact dermatitis: the skin of the feet in contact with allergenic substances such as ointment, can occur in the skin mucous membrane contact area of acute or chronic inflammatory reaction, the severe cases can be manifested as redness, blisters, blisters. 3. Tinea pedis: the foot skin is infected by fungi, can cause lesions lesions, at first for the deeper blisters, blisters within the clear liquid, can be accompanied by itching symptoms. It is recommended that people with itchy blisters on the top of the feet go to the hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.