hi doctor, whenever there is a situation causing extreme happiness or extreme sadness around me , my hands, legs lips and eyes start shivering along with that the fingers of my hands are locked which get again in the normal position after few minutes . i have consulted a doctor who says that i am suffering from vitamin D deficiency or hypocalcaemia. earlier my serum calcium level was 5.9 but now it is 9.1 (normal) but my knees have also started paining while going up through a stairs. so my question to you is that this problem of locking of fingers of my hand is due to calcium deficiency or not. thank you