Antifungal agents are a class of medications or compounds that are used to treat fungal infections in humans and animals. Fungal infections can range from mild conditions like athlete's foot to more serious and life-threatening infections like invasive candidiasis or aspergillosis. Antifungal agents work by targeting and disrupting the growth and reproduction of fungal organisms, either by inhibiting their cell wall synthesis, disrupting their cell membrane function, or interfering with their metabolic processes. There are different classes of antifungal agents, including azoles, polyenes, allylamines, echinocandins, and pyrimidine analogs, each with their own mechanism of action and spectrum of activity. Antifungal agents play a crucial role in the treatment of fungal infections and can be administered topically, orally, or intravenously, depending on the severity of the infection.