Hypocalcemia and Hypercalcemia are the two important metabolic disorders of calcium.

Hypocalcemia- decrease in serum calcium level below 9.2 mg/dl

Hypercalcemia-increase in serum calcium level above 10.5mg/dl

So lets study them by comparing their features.

Chvostek’s sign-contraction of facial muscles on tapping over facial nerve branches.

Trousseau’s sign-Appearance of carpal spasm when sphygmomanometer cuff inflated above systolic blood pressure.

Both the signs are seen in hypocalcemia.

Reference- A.K.Tripathi oral medicine for dental students 3rd edition