Paula Serpa @pserpascience

Patient presents with fatigue and difficulty walking. What’s this sign called? Diagnosis ?

@BrownJHM

Trousseau sign It is a clinical finding that may indicate an underlying medical condition, specifically hypocalcemia. It is characterized by carpal spasm, which is induced by inflating a blood pressure cuff on the arm above the systolic pressure for a few minutes. The positive sign is the observation of carpal spasm during this procedure. Explanation: The Trousseau sign is named after Armand Trousseau, a French physician who first described it. It is a manifestation of latent tetany, which is a condition characterized by increased neuromuscular excitability due to reduced levels of ionized calcium in the extracellular fluid. Hypocalcemia can occur due to various reasons such as vitamin D deficiency, parathyroid gland dysfunction, kidney disease, or malabsorption disorders. How to Elicit Trousseau Sign: 1. Inflate a blood pressure cuff on the upper arm to a pressure higher than the systolic pressure. 2. Maintain this pressure for 3-5 minutes. 3. Observe for the development of carpal spasm, which is characterized by flexion of the wrist, metacarpophalangeal joints, and interphalangeal joints. FAQs: 1. Can Trousseau sign occur in conditions other than hypocalcemia? Yes, the Trousseau sign can also be observed in other conditions such as hypomagnesemia, alkalosis, and hypoparathyroidism. 2. Is the Trousseau sign a specific indicator of hypocalcemia? While the Trousseau sign is highly suggestive of hypocalcemia, it is not specific to this condition and can be seen in other electrolyte imbalances as well. 3. Can the Trousseau sign be elicited in all individuals? No, not all individuals will exhibit the Trousseau sign even if they have hypocalcemia. The sensitivity of the sign varies, and some individuals may not show any carpal spasm despite having low calcium levels. 4. Can medications affect the Trousseau sign? Yes, certain medications, such as calcium channel blockers, can affect the Trousseau sign and may lead to false-negative results. 5. Is the Trousseau sign a reliable diagnostic tool? The Trousseau sign is a useful clinical finding, but it should be interpreted in conjunction with other clinical symptoms and diagnostic tests to establish an accurate diagnosis. Try - bit.ly/ClinicIQ

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Which condition is characterised by these clinical features?

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