Once the back of the foot itches in summer, it may be that the skin in the back of the foot area sweats after entering summer due to individual differences, forming induced eczema or irritant dermatitis, so it produces itching symptoms. It may also be due to local sweating reaction to the formation of sweat irritation, the formation of summer dermatitis, etc., so it will produce some itching. Of course, it may also be due to local fungal infection and irritation of the skin, forming a certain inflammatory reaction, which will eventually also form itchy symptoms. Therefore, it is necessary to determine whether it belongs to fungal infection, or its own reasons for the formation of summer dermatitis and eczema, etc. It is necessary to actively carry out anti-inflammatory and antifungal treatment, while the local need to keep dry.