How to Determine if a Cat Has Ringworm

Contrary to its name, ringworm is a common fungal infection that affects cats. Cats can become infected with ringworm by digging in infected soil, from infected rodents or their dens, or from other infected cats, dogs or humans. Infection can happen from direct skin to skin contact or via an infected environment. There are some common symptoms that can help you determine if your cat has ringworm.

Instructions

    • 1

      Watch your cat for symptoms if you know that he has been exposed to another infected animal or human. Ringworm is contagious and it is not uncommon for it to be spread between household members when one catches it.

    • 2

      Look for circular patches of hair loss on your cat, especially on the head and limbs. This is the most recognized symptom of ringworm. You may see red pimples or bumps that gradually spread into a circle or oval.

    • 3

      Examine your cat for patchy areas of baldness, skin that is dry, flaky or itchy, or infection of the claw or claw bed. These can all be signs of ringworm although they may indicate other issues as well.

    • 4

      Use an ultraviolet Wood's lamp on your cat. Around 50 percent of ringworm strains will glow a florescent green. As all strains will not appear, this is not a foolproof test for ringworm.

    • 5

      Have your vet do a culture from your cat's hair. The lab will be able to determine the exact species of fungus present, which may help treat persistent cases.

    • 6

      Treat all cats within a household when one has been diagnosed with ringworm. Some cats may not show symptoms, but will continue to carry the infection and potentially spread or re-infect other cats.