Hyperthyroidism (over active thyroid gland) usually affects elderly cats. The most frequently seen signs are:

               Increased appetite

               Weight loss

               Increased vocalisation

               Sometimes an increase in water intake

               Increased levels of activity

Diagnosis of this condition usually involves checking the blood pressure, heart rate and taking a small blood sample to test the thyroid levels.

If it is not treat it can lead to secondary problems including heart failure, kidney failure and loss of sight due to the increased blood pressure.

There are various treatment options for this condition which include surgical removal of the enlarged thyroid gland or long term medication. There can be problems associated with the surgery and many cases the option of medical management is preferable.