Hyperthyroidism, Feline - contd.

ClinicalSigns
The clinical signs of hyperthyroidism demonstrate an overall increase in metabolism and involve multiple body systems. The majority of cases will show signs such as weight loss, polyphagia, hyperactivity, unkempt haircoat or alopecia, vomiting, diarrhea, polydipsia, polyuria, and aggression. Less than 10 percent of hyperthyroid cats will present with atypical signs such as poor appetite, anorexia, lethargy, and weakness. Common physical exam findings include an enlarged thyroid gland(s), cachexia, heart murmur, tachycardia, and hyperactive behavior.

Symptoms
The common symptoms that most owners notice include weight loss, a voracious appetite, and increased activity level. Other common symptoms include vomiting, an unkempt haircoat, patches of hair loss, and increased water intake and urination.