Can Ringworm in Dogs Spread to Humans?

Ringworm is a fungal infection, not a worm. An infected dog may have circular hair loss, broken hairs, scale, crusting, or few visible signs. Shed hairs and flakes can carry spores onto blankets, collars, brushes, floors, and furniture. A person who becomes infected may develop an itchy, scaly patch that enlarges outward. A [Skin Rash](/symptoms/skin-rash/) after contact deserves assessment, but not every rash following pet contact is ringworm.

Ask a veterinarian to examine the dog and follow instructions for animal treatment and environmental cleaning. Until then, wash hands after handling the dog, avoid sharing bedding or grooming tools, and keep the dog away from close face-to-skin contact. Clean shed hair and wash fabrics as advised. Do not put human medication on the dog. If you develop a lesion, seek medical advice; [Ringworm](/conditions/ringworm/) may be treated with [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) or another option depending on its site and extent.

Arrange prompt review for a rapidly expanding rash, facial or scalp involvement, pain, pus, fever, or extensive irritation. Seek early advice after exposure if you have reduced immunity or live with a young child. The dog needs veterinary review for widespread lesions, discomfort, poor appetite, or repeated new patches.

Ask whether the lesion needs testing, whether family members should be checked, how to clean the home, and when close contact with the dog is reasonable. Ask what change would mean your treatment needs review.