Ringworm (Dermatophytosis)

Despite its name, ringworm is not caused by a worm but by a group of fungi called dermatophytes. This infection is contagious and can be transmitted between pets and even to humans (zoonotic). It primarily affects the skin, hair, and claws, leading to characteristic lesions that often appear as circular patches of hair loss with red, scaly, or crusty edges. However, the appearance can vary greatly, sometimes mimicking other skin conditions. Young, elderly, or immunocompromised animals are often more susceptible. Diagnosis is typically made through a fungal culture of hair and skin samples, or sometimes with a Wood's lamp. Treatment usually involves topical antifungal medications (shampoos, creams) and/or oral antifungal drugs for several weeks, depending on the severity and spread of the infection. Environmental decontamination is also important to prevent reinfection.