The instep is particularly itchy. Scratch it with your hand. Is this beriberi, doctor?

Instep above special itch, consider there may be beriberi, is caused by fungal infection, you can go to the hospital to do a fungal examination, if it is fungal infection caused by beriberi, you can topical compound ketoconazole ointment. Secondly, there may be eczema, eczema is generally caused by allergic factors.