Tinea pedis, also known as athlete’s foot or athlete’s foot, is a condition that many people have suffered from, but what are the clinical signs and dangers of it? Tinea pedis is a common skin disease caused by a fungal infection. It is mainly caused by Trichophyton rubrum, Trichophyton floccosum, and Trichophyton spp. It is also not uncommon for Candida to cause it. The disease is heavy in summer and light in winter, and can be triggered by moist and sweaty feet, impermeable footwear, and long-term use of glucocorticoids or immunosuppressants for diabetes. The disease is somewhat contagious and is often transmitted through communal slippers, footbaths, bath towels, bathhouses, etc. Tinea pedis is often divided into four types according to the appearance of the lesions: papulosquamous, blistering, macerated erosion, and hyperkeratosis. 1. Papulosquamous type: It is often characterized by small flakes of flaking on the plantar surface of the foot, which are attached to the edges of the lesions in an arc or ring shape, with erythema and papules on top of the thickened lesions. Itching is obvious. It can occur throughout the year, most commonly in hot weather; 3, impregnated erosion type: most commonly found between the third and fourth toes, manifested as moist impregnated skin whitening, often accompanied by sweating, itchy. Can occur due to bacterial secondary infection and malodor, aggravated in summer, reduced in winter; 4, hyperkeratosis type: often manifested as heel, plantar, parapatellar skin hyperkeratosis, rough surface without sweating, often symmetrical patches, no blisters, papules. In winter, it often leads to dry and cracked skin and self-conscious pain. What are the dangers of tinea pedis? 1. Tinea pedis can produce itching, pain and other sensory discomfort, and may affect social interaction in public places; 2. Tinea pedis is contagious and may affect the health of family members; 3. Tinea pedis causes secondary infections in other areas, and if it is not treated actively, repeated scratching may cause infections in other areas, such as ringworm, ringworm, ringworm of the body, ringworm of the head, ringworm of the nail, etc.; if it causes secondary bacterial infections, it may cause dermatitis, cellulitis, etc., and repeated attacks It can cause elephantiasis.