Tinea corporis and tinea cruris are both caused by fungal infections, and they are highly contagious and recurrent. Generally speaking, tinea corporis does not have very obvious symptoms of itching, but most patients with tinea cruris experience severe itching because it grows at the root of the thighs, an area that is often damp and not well ventilated, allowing fungi to proliferate quickly. Typically, there is mild to moderate itching. If these diseases are detected, it is crucial to seek prompt and formal treatment. The most common treatment is the application of antifungal creams, which can completely cure the condition if used consistently for at least 1 to 2 months. It is essential to sun-dry and disinfect underwear and socks, frequently clean beds to eliminate mites or fungi, and avoid keeping small animals at home.