Fungal infections include superficial fungal diseases and deep fungal diseases, and superficial fungal diseases are the most common fungal infections of the skin. When superficial fungal infections infect different parts of the body, they can lead to ringworm of the head, tinea pedis, tinea corporis and other diseases, often manifested as erythema, papules, blisters, flaking and so on, with different parts of the body and different manifestations. 1. ringworm of the head: when there is fungal infection on the head, it will cause ringworm of the head, which may lead to itching of the head skin, and also cause damage to the hair follicles, which can make the local appearances of erythema, papules, pustules, or bright red vesicles or shallow ulcers, and it is easy to cause hair loss. 2. Tinea pedis: when fungal infection occurs in the hands and feet, it may cause skin erythema, papules, blisters, desquamation, and even erosion; prolonged scratching of the rashes will also lead to roughness and thickening of the skin, which is often accompanied by itching; tinea pedis is prone to foul odor after secondary bacterial infection. 3. Tinea corporis: when there is tinea corporis, it will lead to red pimples on the affected skin, accompanied by itching, and gradually spread to the surrounding area to form red patches, covered with scaly scales, with clear boundaries, accompanied by itching. Deep fungal diseases can also cause infections of the skin and its deeper tissues, such as chromoblastomycosis, which causes granulomatous lesions and suppurative infections of the skin. Therefore, it is recommended that patients who have the above suspected symptoms and consider skin fungal infections should consult a doctor as soon as possible for examination and standardized treatment after a clear diagnosis, and should not blindly use their own medication to avoid serious adverse consequences.