Hugo

Hyperthyroidism

Over the last few weeks we noticed that something just wasn't quite right with Hugo. As well as his limp her also always seemed lethargic. Hugo also has always had a ravenous appetite but had lost weight which was odd. So last Thursday we sent Hugo down to the vets for some testing. Our suspicions were correct and poor old Hugo has been diagnosed with Hyperthyroidism.

What is Hyperthyroidism?

The thyroid gland secretes hormones to regulate many metabolic processes, including growth, development and energy expenditure. Hyperthyroidism (also known as thyrotoxicosis) is caused by the over activity of the thyroid gland, which produces more than the normal level of thyroid hormones T4 & T3, which are released into the bloodstream. Most often, hyperthyroidism is the result of a benign tumour (called an adenoma) involving one or both of the thyroid lobes. Feline hyperthyroidism is the most common disease of the endocrine system.

What is the endocrine system?

The endocrine system is composed of glands which secrete hormones into the bloodstream. Hormones regulate many body processes.

What does the thyroid do?

Consisting of two lobes, the thyroid is located in the neck on either side of the windpipe. It produces two hormones T3 triiodothyronine and T4 thyroxine. Both hormones help control metabolism.

What are the symptoms?

• Weight loss despite an increased appetite
• Increased thirst and urination
• Vomiting
• Diarrhoea
• Behavioural changes (nervous/jittery behaviour, aggression, over grooming and or bald patches, hyperactive, increased vocalisation)
• Rapid heartbeat
• Poor coat
• Weakness (occasionally)
• Decreased appetite (occasionally)
• Hypertension (high blood pressure)

Treatment

Hugo is now on a course of Vidalta tablets. Vidalta is a once daily treatment which brings the elevated level of thyroid hormone (thyroxine) in hyperthyroid cats back to normal. By doing so, Vidalta quickly and safely resolves the visible signs of hyperthyroidism and restores your cat to its normal self.