Hyperkeratosis is a condition in which the skin thickens due to excessive production of keratin. This protein is normally present in the skin, hair and nails, but in hyperkeratosis, too much is produced. This can cause thickened, scaly patches of skin. Although this condition occurs in several animal species, we see it mostly in dogs and cats. The exact cause is not always known. Various factors can play a role, such as genetic predisposition, certain medications, hormonal disturbances and underlying diseases.
In most cases, it is caused by (abnormal) constant external pressure, by irritation and possibly by an inflammatory condition of the skin. To protect the skin, the production of keratin is accelerated, and this extra layer of keratin then acts as a kind of protective cover.
Symptoms can vary widely, depending on the severity of the condition and the location of the thickened skin patches. Some common symptoms include:
Hyperkeratosis is easily recognised by the thickened or cornified skin. But if the symptoms persist, it is best to contact your vet.
The vet will perform a comprehensive examination to find out the underlying cause of the hyperkeratosis.
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