An acute infectious disease characterised by tonic spasm of voluntary muscles, especially of the muscles of the jaw, also known as lockjaw, and caused by an exotoxin produced by a bacterium of the genus Clostridium (C. tetani) which is usually introduced through a wound.
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Acute Hypercalcaemia

Hypercalcaemia is a high calcium (Ca2+) level in the blood serum. Most cases are due to primary hyperparathyroidism or cancer. Other causes include sarcoidosis, tuberculosis, Paget disease, multiple endocrine neoplasia (MEN), vitamin D toxicity, familial hypocalciuric hypercalcaemia, and certain medications such as lithium and hydrochlorothiazide. Read more about the symptoms and management of Acute Hypercalcaemia.