Trichophyton rubrum is a type of fungus that commonly causes skin infections, particularly athlete's foot and ringworm. It thrives in warm, moist environments and can be found on the skin, nails, and hair of infected individuals. This fungus is highly contagious and can spread through direct contact or by sharing contaminated items like towels and shoes. Infections caused by Trichophyton rubrum often lead to symptoms such as itching, redness, and flaking skin. Treatment typically involves antifungal medications, which can be applied topically or taken orally, depending on the severity of the infection. Maintaining good hygiene and keeping the skin dry can help prevent its spread.