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 that topical antifungal drug treatment, such as dacrynic ointment, gold dacrynic or clotrimazole, bifenazole ointment, generally such drugs with about two weeks, 3-4 times a day with the application of treatment. Avoid spicy food stimulation, strain, stay up late during the medication, wash feet every day, keep the local clean and dry hygiene. 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 whether there is fungal infection inside the flaking.