Ringworm in dogs presents as a dermatophytosis, a fungal infection of the skin, hair, and nails. The visual manifestations are varied, but commonly include circular patches of hair loss. These lesions often display a scaly or crusty appearance, and may be accompanied by inflammation and redness of the surrounding skin. While the “ring” shape is characteristic, it is not always present, and the infection can appear as more generalized areas of hair loss or skin irritation. The clinical presentation is influenced by factors such as the dog’s age, immune status, and the specific fungal species involved.
Accurate identification of dermatophytosis is critical for prompt treatment and prevention of its spread, as it is a zoonotic disease, meaning it can be transmitted from animals to humans. Early diagnosis allows for the implementation of appropriate antifungal therapies, minimizing discomfort for the affected animal and reducing the risk of infection for other animals and individuals in the household. Historically, recognizing the signs of ringworm has been essential for maintaining public health and animal welfare, particularly in environments where animals are housed in close proximity.