This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
While getting blood pressure tested patient repos abnormal feeling in fingeips followed by involuntary spasm of fingers likely patient has 
Select and explain. 
A. Hysterical spasms, B. Pressure spasm of muscles due to reuropaxia, C. Hypocalcemic tetany, D. Ischemic muscle spasms
C: Hypocalcemic tetany
Answer: C: Hypocalcemic tetany 
Explanation: Trousseaus sign can be seen in hypocalcemic tetany. There is spasm of muscles of upper extremity that causes flexion of wrist and thumb with extension of the fingers. It can be produced by occluding the circulation for a few minutes with a blood pressure cuff.Ref: Ganong&;s Review of medical physiology, 24th edition.Pg no.382