Ringworm, or dermatophytosis, is
an infection of the most superficial layer of the skin with a fungi, usually
(98% of the time in cats), a species called, Microsporum canis.
Skin scrapings for cultures are the most reliable method of diagnosis since not all species of fungi fluoresce under the ultraviolet Wood's lamp that is sometimes used as an aid in diagnosis. A Wood's lamp is helpful for catteries where M. canis is the known cause as it allows for a quick check on the progress of treatment in a large number of cats. It also may aid in checking the thoroughness of any disinfecting routine.
Shaving the cats with a #10 (surgical A-5 clipper blade) is recommended, as well as isolation techniques, if possible. This allows the medication to get down to the site, and stops the shedding of infected hairs (the spores).
Since many cats can have the disease
and not show any symptoms, it's best to treat all the cats. Many
references say to isolate infected cats. My opinion is that all cats
are potentially infected and should be treated as if they are.
Wash the cat with Miconozole shampoo leaving it on at least 5 minutes (10 is better but bordering on ridiculous), then dry the cat thoroughly and spray the cat with the LymDyp-S spray.
A few veterinarians will recommend systemic treatment with Fulvicin (grisofulvin) given orally. It causes birth defects if given to pregnant queens. It has numerous other side effects such as bone marrow suppression, liver and kidney damage, and loss of appetite to name a few. Even the healthiest cats can have difficulty tolerating treatment with Fulvicin. There are other drugs, like Nizoral, Diflucan, and Sporonox that can be prescribed but also have side effects. This decision needs to be made by you and your vet.
If you don't wish to rip your carpet out, then vacuuming daily and throwing the bag away is recommended. Always color-fast test your carpet before applying any treatments, but Health Guard Laundry Additive (ViBAX-5) can be mixed as a spray and sprayed on the carpet. DC3 (Triple Jet) Dyna-Fog Hurricane Fogger can be used to fog a carpeted room with a disinfectant, hopefully, one that is color-safe and non-staining!
Ft Dodge makes
a ringworm vaccine called Fel-O-Vax MCK. It is killed Microsporum
Canis. It can be given to healthy cats that are at least 4 months
of age as an aid in the prevention and treatment of ringworm. It
is given subcutaneously, repeated in 12 to 16 days, then repeated again
26 to 30 days following the 2nd dose for a total of three injections.
The cost is about $10.00 per injection if you buy the vaccines in bulk
through a mail-order catalog and administer it yourself (costs include
1st day air shipping of the vaccines). Some breeders recommend dividing
the vaccine up and injecting it into two sites since the vaccine tends
to cause severe local skin reactions, often causing large abscesses.
J-B Pet Supplies Homepage
KV Vet Supply
Omaha Vaccine Company - 1 800 367-4444
Drs Foster & Smith - 1 800 826-7206
Revival Animal Health - 1 800 786-4751 - Great Ringworm Products
New England Serum Company - 1 800 637-3786
R.C. Steele - 1-800-872-3773
Current Veterinary Dermatology, The Science and Art of Therapy, by Griffin, Kwochka, MacDonald, (DVM'S) Mosby, 1993
Skin Diseases of Dogs and Cats, A Guide for Pet Owners and Professionals, Dr. Steven A. Melman, DermaPet, 1994
Revival Animal Health 1998 Fall Catalog
| The Cats