Ringworm in Cats: Causes and Human Exposure

A cat may carry fungus on its coat or develop broken hairs, circular hair loss, scale, crusts, or little visible change. Spores can remain on brushes, blankets, furniture, and floors, allowing infection to pass to another animal or a person. Kittens, long-haired cats, and animals living in crowded settings may need particularly careful assessment, but any cat can be affected. Human infection may appear as an itchy, scaly [Skin Rash](/symptoms/skin-rash/), so a person’s symptoms should be assessed separately.

Contact a veterinarian for the cat and follow the recommended plan for examination, treatment, and cleaning. Limit close contact until advice is given, wash hands after handling the animal, and do not share grooming tools or bedding. Vacuum and clean surfaces as directed; spores in shed hairs matter, so routine tidying alone may not be enough. If you develop a scaly patch, seek medical advice and read about [Ringworm](/conditions/ringworm/) and [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/).

Seek prompt medical review if a rash is spreading quickly, very painful, draining, or accompanied by fever. Arrange early advice for a child, an older adult, or someone with reduced immunity after animal exposure. The cat also needs veterinary attention for spreading lesions, marked discomfort, poor appetite, or multiple affected animals in the household.

Ask whether your rash needs a fungal test, whether other household members should be checked, how to clean safely, and whether your cat’s treatment changes your own follow-up. Ask which warning signs mean the rash needs reassessment.