Consider beriberi. Usually beriberi is a fungal infection of the foot, which will spread to other parts if it is not controlled in time. In addition to treatment, antifungal drugs are mainly used, such as Dakening, Lanmeishu, Guizhou Shenqi and Huatuo Ointment. As long as you persist in using it and continue to use it for a week after the symptoms disappear, you can generally be cured.

Guiding opinions:

At the same time, feet should be kept dry and clean, and shoes should be breathable.