HypoPTH

Question 1

Causes and finding

Answer 1

1) Due to accidental surgical excision (thyroid surgery)
2) Autoimmune destruction
3) DiGeorge syndrome

Finding: hypocalcemia, tetany
Chvostek’s sign (tapping facial nerve causes contraction)
Trousseau’s sign (occlusion of brachial artery with BP, carpal spasm)

Question 2

PsuedohypoPTH

Answer 2

AKA Albright’s hereditary osteodystrophy

Autosome dominant kidney unresponsive to PTH
Hypocalcemia, shortened 4th/5th digit, short stature