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Rainy seasons may not be all too well for your pets. The more humid
the weather is the more they are prone to fungal infections leading
to skin rashes. This skin condition is more commonly known as Malassezia
infections.
Malassezia pachydermatis stems from yeast which is commonly located
at the skin of most pets. This yeast more often than not survives
causing no harm at all; however, in some cases, they can multiply
and replicate in huge numbers.
Fungal infections are found on cats and dogs in the North American
areas. It is not a major concern for pets in good shape, and is
usually located in local parts of the skin. It maybe found on the
anal sacs, ear canal, rectum and vagina of pets. Malassezia infections
can cause infections to dogs of all ages and breeds, but are not
as frequent in cats. A number of dog breeds have already developed
an increased vulnerability in acquiring Malassezia infections.
Any allergenic factor or disease that penetrates the skin's defense
system can trigger a Malassezia pachydermatis infection. Pets that
have a persisting condition such as allergies, bacterial infection,
or seborrhea are prone to irritating skin that often leads to Malassezia.
Some pet breeds have weak immune system, particularly with their
T lymphocytes. These are the fighting cells against Malassezia.
Symptoms
Signs of Malassezia infection start to appear in the highly humid
periods of summer and will continue until fall. Skin itch the most
common symptom with this skin condition. The dog can damage the
skin due to persistent scratching. The yeast infection may be found
on the local areas on the anal area, ear, toes, muzzle, or may cover
the entire body itself. Pets in the latter case will not only have
a foul, greasy smell but may also suffer from oily, scaly skin.
Pets with local infections in the muzzle have the tendency of rubbing
or scratching their face. You’ll notice pets shaking their
heads and scratching their ears if the fungal infection is located
in the ear. Toe infections make pets lick their feet persistently.
Other symptoms may appear such as redness, hair loss, thickening
of the skin and hyperpigmentation.
Treatment
There are several ways of treating Malassezia. In permanently eliminating
the infection proper treatment is essential, whether it is an allergy,
bacterial infection, or seborrhea. Once all of the root causes are
remedied, then we can proceed to either generalized or localized
treatment.
To present a non-suitable environment for Malassezia infections,
skin lipids should be removed. Chlorhexidine shampoos that have
a strength of 1% or more, and shampoos with active ingredients such
as benzoyl peroxide and sulfur may also be applied. Human shampoos
such as Selsun Blue are effective treatments against Malassezia
in some dogs, although irritation may result there from.
In treating severe infection cases, or fore those that have a high
resistance to topical products, itraconazole or oral ketoconazole
may be directed for a number weeks. The responses in these treatments
will be apparent in 1-2 weeks. However, within the next 3-5 weeks
therapy will be needed.
Malassezia in the ears are prevented by constant hygiene in the
ears twice daily. Ear cleaners which contain acetic or boric acids
can help stabilize a certain pH that prevents the increase of yeast.
After the cleansing treatment, it can be followed by proper topical
medications.
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