| by Kansas State
Media Relations
Fleas, ear mites
and walking dandruff are all external parasites
that can cause your cat discomfort, according to
Kansas State University veterinarian Dr. Michael
Dryden.
These parasites
represent 99 percent of all external parasites
in catteries and households. Dryden said if you
are a cat owner you should know at least the
basics about them.
Flea control is a
yearly battle for many cat owners. Dryden said
an effective flea program treats the infested
cat, all contact animals and the environment.
Fleas are blood suckers that will cause your cat
to itch and maybe get a skin infection. Not only
do cats itch when they get fleas, they also shed
flakes of flea dirt, which is the dried blood
left behind by the fleas.
To get rid of
fleas, vacuum the carpet before applying
insecticides and discard the vacuum cleaner bag
immediately; each week, wash the places the cat
spends most of its time; and use a spray or
fogger in the environment.
In the
environment, use an insecticide to kill the
adult fleas and an insect growth regulator to
inhibit the growth of the flea eggs and larvae.
Reapplication will probably be needed in one to
two weeks, because less than 20 percent of fleas
in the pupa stage can be killed with this
treatment. The pupae are what make getting rid
of fleas so difficult. Fleas in this stage will
continue to hatch for two to four weeks after
treatment begins.
The cat should be
treated simultaneously with the environment.
Dryden said to use only flea products labeled
for use on cats. He recommends a pyrethrin-based
shampoo.
Ear mites, also
called otodectes cynotis, are usually seen in
kittens within a few weeks after owners bring
them home. Dryden says 90 percent of all cats
get ear mites. Cats under one year of age are
more vulnerable, because they haven't built up
resistance.
Mites will spend
their entire life in ears, but could also be on
the feet, face, neck and tailhead. They have a
three week cycle and they can survive off the
host for several weeks. Unlike fleas, they
aren't blood-sucking, nor do they pierce the
skin.
The signs of ear
mites are head shaking, scratching the ears,
coffee-ground-like discharge, big sores behind
the ears, epilepsy-resembling fits and ear
infections. The treatment for the mites is to
clean the ears with a solution your veterinarian
recommends, treat the ears with a mite-killing
drug for three weeks and treat the whole body
with flea shampoo or powder.
Walking dandruff,
which is called cheyletiella blakei, lives its
whole life on one host. This also tends to be a
young animal parasite. The life stages are egg,
larva, nymph and adult. The larvae and nymphs
die after 24 hours of being away from the host,
but the adults may survive 10 days.
The parasites
burrow into the skin, attach to the skin and
become engorged with a colorless fluid. The
signs of walking dandruff come on slowly.
Symptoms are itching and scratching, a gradual
increase in miliary lesions or generalized
dandruff, hair loss, and red papules on the
head, neck and back.
Walking dandruff
is also a pathogen for humans. It won't
reproduce on them, but the bites will cause
itchy pustules. The lesions will usually go away
after ridding the environment of the parasites.
Once walking
dandruff has been diagnosed on a cat or human in
the household, all animals and the entire
environment should be treated. Cats can be
asymptomatic carriers and the environment is
probably contaminated. The cats' treatment is
three treatments of insecticidal dip or shampoo
at two- to three-week intervals. The environment
should be sprayed with an insecticide. |