Tinea pedis (commonly known as “athlete’s foot” or tinea pedis) is a fungal infection that often occurs unilaterally (i.e., on one foot) and then spreads to the opposite side weeks or months later. The blisters mainly appear on the belly and side of the toes, most commonly between the third and fourth toes, and also on the bottom of the foot, as small deep blisters, which can gradually fuse into large blisters. Clinical manifestations There are five types of foot fungus (tinea cruris and tinea pedis are the same): 1. Intertriginous type The skin between the third and fourth toes, or the whole toe, is softened, peeling and cracked, sometimes with red vesicles and a foul odor, heavy in summer and light in winter. 2, blister type in the foot plantar, foot edge, there are often blisters in groups or scattered, local skin flushing, sometimes secondary to bacterial infection, blisters into pustules, to the summer is common. 3, inter-rub type foot plantar, the damage is mainly scales, accompanied by sparse and dry small blisters, local erythema, papules, creepy, can occur in all seasons, more common or aggravated in summer. 4.Keratosis type The heel, plantar and parapetal areas of the foot have dry, thick, hyperkeratotic skin, with a widened skin texture, and are prone to cracking, which can occur in all seasons, and is more common or aggravated in winter. 5, Tinea corporis type The back of the foot, damage with typical arc or ring-shaped body fetish changes, often complicated by tinea corporis, more common or aggravated in summer Medication 1, blister type tinea pedis Can be applied externally with compound tincture of benzoic acid, undecylenic acid ointment, or soak with 10% glacial acetic acid solution or apply 1% terbinafine cream, miconazole cream, external application of rubbing for 2 to 4 weeks. 2, inter-rub type should try to keep dry, pay attention to protect the trauma, avoid washing or use of soap, do not scratch, can first use 0.1% epsilon acridine (Livano) solution or 3% boric acid solution soak and then apply a powder containing 5% salicylic acid or 5% to 10% sulfur, no obvious erosion, can be applied to the foot powder, foot light powder, alum powder, or local application of compound salicylic acid tincture or compound tulip tincture, for 15 days. When exudation is not obvious, 10% salicylic acid ointment can be used as a conventional bandage. 3. For scaly and keratotic tinea pedis, compound benzoic acid ointment, 3% clotrimazole ointment, 2% miconazole cream, 10% salicylic acid ointment or 1% terbinafine cream can be applied topically for 2 to 4 weeks, or bandage treatment can be applied. Note on medication 1. Clotrimazole preparations can occur allergic and irritating symptoms. Women’s pregnancy is not contraindicated in the topical application of clotrimazole on the skin. 2.Bifenazole Local allergic symptoms may occur, such as itching, burning sensation, erythema; very few people have burning pain, peeling skin, etc. Use once a day, but preferably at night before rest. Pain at the site of application and its peripheral edema may occur after application. These adverse reactions will disappear after discontinuation of the drug. Children must be used under adult supervision. During breastfeeding, this product should not be applied to the breasts. Do not use this product during the first 3 months of pregnancy without consulting a doctor. 3. Miconazole Topical topical application may cause skin irritation. Avoid contact with eyes. Friction parts are preferable to use lotion. If a small amount of cream is applied, it should be rubbed well to avoid soaking effect. If the skin has vesicular surface, lotion should be applied first (without cream). 4. Ciclopirox cream is used externally, occasional local irritation is seen, and contact dermatitis may occasionally occur. Avoid contact with eyes and other mucous membranes (such as mouth, nose, etc.). If there is burning sensation, redness and swelling at the site of application, stop the medication and wash the local medication, consult with physician if necessary. Pregnant and lactating women use with caution, children are prohibited. 5.Undecylenic acid ointment After the symptoms disappear, the medication should be continued for 2 weeks. If the treatment does not improve in 4 weeks, it is necessary to consult the doctor. For persistent fungal infections, use spreading agent during the day and ointment at night. After the infection is relieved and the symptoms disappear, the spreading agent can be continued to prevent re-infection. 6.Ketoconazole cream is prohibited for patients with acute and chronic liver disease. Combined with ethanol, the chance of hepatotoxicity increases, so those who receive long-term treatment or have a history of liver disease should avoid drinking alcoholic beverages. Pregnant and lactating women should weigh the advantages and disadvantages of using the drug. 7. Glucocorticoid preparations The application of glucocorticoid preparations, such as tretinoin (de-inflammatory pine) cream or fluocinolide (skin relaxation) cream, is forbidden before tinea corporis or ringworm has been eradicated to avoid aggravating the lesions.