Skip to content

What causes elevated T4 in cats?

What causes elevated T4 in cats?

Also called thyrotoxicosis, hyperthyroidism is caused by an increase in production of thyroid hormones (known as T3 and T4) from an enlarged thyroid gland in a cat’s neck. In most cases, enlargement of thyroid glands is caused by a non-cancerous tumor called an adenoma.

Does Graves disease cause vomiting?

Thyrotoxicosis may present in many ways, including nausea, abdominal pain, palpitation, and vomiting. However, vomiting as a prominent presenting symptom of thyrotoxicosis is uncommon. After reviewing literature, 34 cases of thyrotoxic vomiting were reported in the English literature.

Can hypothyroidism cause vomiting?

Persistent nausea, vomiting, diarrhoea and abdominal pain can be caused by hypothyroidism. Hypothyroidism is a rare cause of these symptoms. Thyroid function tests should be conducted in patients with refractory gastrointestinal symptoms, especially if routine investigations do not reveal a cause.

What are the signs and symptoms of thyrotoxicosis?


  • Unintentional weight loss, even when your appetite and food intake stay the same or increase.
  • Rapid heartbeat (tachycardia) — commonly more than 100 beats a minute.
  • Irregular heartbeat (arrhythmia)
  • Pounding of your heart (palpitations)
  • Increased appetite.
  • Nervousness, anxiety and irritability.

Can Graves disease cause stomach issues?

Graves’ disease accounts for 60% to 80% of thyrotoxicosis. Hyperthyroidism is accompanied by normal gastric emptying with low acid production, partly due to an autoimmune gastritis with hypergastrinemia. Transit time from mouth to cecum is accelerated, resulting in diarrhea.

Can levothyroxine cause vomiting?

Hypersensitivity Reactions These include urticaria, pruritus, skin rash, flushing, angioedema, various gastrointestinal symptoms (abdominal pain, nausea, vomiting and diarrhea), fever, arthralgia, serum sickness, and wheezing. Hypersensitivity to levothyroxine itself is not known to occur.