Blistering and very painful on the bottom of the feet is considered a kind of ringworm, foot fungus. Because it is a ringworm caused by fungal infection, the fungus infects superficially under the skin and causes an inflammatory reaction in the subcutaneous tissue, resulting in superficial skin redness, peeling, flaking, furring, itching, blistering, ulceration, exudation, and odor, accompanied by itching discomfort and exudation emitting the smell of rotten eggs. It is recommended to treat tinea pedis with topical antifungal medications, such as Dakine ointment, gold Dakine or clotrimazole, bifonazole ointment, and generally such medications are used for about two weeks with 3-4 applications per day to treat tinea pedis with topical medications, and the course of treatment generally takes 1-2 months. Avoid spicy food stimulation, exertion, and staying up late during the medication period, and wash your feet daily to keep the area clean and dry and hygienic. If you don’t get relief in a week during the medication period, you need to go to a regular hospital dermatology department and check with a microscope to see if there is flaking and if there is fungal infection inside the flaking.