A fungal skin infection occurs when fungi invade the outer layer of the skin, leading to various symptoms such as redness, itching, and rashes. Common types include athlete's foot, ringworm, and jock itch. These infections thrive in warm, moist environments and can spread through direct contact or contaminated surfaces. Treatment typically involves antifungal medications, which can be topical or oral, depending on the severity of the infection. Maintaining good hygiene and keeping the skin dry can help prevent these infections. In some cases, recurrent infections may require further medical evaluation to identify underlying causes.