Ringworm in Cats - What Causes Ringworm - What is Ringworm
Contrary to its name Ringworm is not a worm at all but a fungus called Dermatophytes. Dermaphtytes means 'plants that live on the skin'. In the past, because of the circular lesions made by the fungi they were thought to be caused by worms, hence the name ringworm.
The fungi live on the surface of the skin and in the skin follicles feeding on dead skin tissue and hair.
There are three different types of fungus that can cause ringworm but the most predominant ones found on cats and dogs is Microsporum canis.
What does Ringworm look like on my cat or dog?
The usual symptom is a round hairless lesion. The characteristic "ring" that we see on humans doesn't always appear as a ring on cats. This lesion will grow in size and often become irregular in shape.
The fungi cause the hair shafts to break off and this results in patches of hair loss. Ringworm are commonly found on the face, ears, tail and paws. The lesions are scaly and may or may not be itchy and often the skin is reddened and inflamed.
Fortunately the spores are
easily killed with a solution of bleach and water.
Can Humans catch Ringworm from Cats or Dogs?
Ringworm is contagious and can be spread from cat or dog to a human
Humans can catch ringworm by touching an infected cat or dog (or other animal) with ringworm. Ringworm is transmitted by direct contact with an infected cat or dog's skin or hair.
Children are more likely to become infected by ringworm from cats and dogs than adults.
Are all cats or dogs susceptible to ringworm?
Healthy adult cats or dogs usually have a resistance to ringworm. Young cats and kittens and puppies are more susceptible because their immune system hasn't fully developed. Many cats and dogs are carriers of ringworm but show no symptoms. They can, however, infect other animals or humans.
Diagnosis of Ringworm
To diagnose Ringworm your vet will need to do one of the following tests. It is not possible by just looking at the skin to make the diagnosis.
Is there a cure for Ringworm?
If no treatment is carried out, ringworm will run it's course in two to four months and the symptoms will resolve themselves. However, treatment is recommended to save your cat or dog from suffering any longer than necessary and to cut down the period of time they are contagious
Your vet may prescribe Griseofulvin for your cat or dog. It is an anti fungal drug that is used for pets with ringworm but it does have some side effects so be sure to consult your vet before giving any medication. Griseofulvin inhibits fungal reproduction.
Shampoos and Dips:
Dips should be given twice a week and can be performed either by your vet or at home. Please be aware that Lime Sulfur will stain clothing and jewelry and will cause temporary yellowing of the cat or dog's hair. It also smells very strongly of rotten eggs. Follow your vets instructions for mixing the dip.
Decontaminate the environment
Use bleach mixed at 1:10 on any surface that you can. It will kill 80% of the spores. Vacuum on a daily basis a dispose of vacuum bags which will contain the spores. Steam cleaning of carpets and furnishings will also kill a large number of the spores.
Don't forget your cat or dog's bedding or basket. Wash the basket down with a bleach solution and wash the bedding in very hot water. Confine your cat or dog to one room of the house to avoid spreading spores all over the house.