### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
After tilt table testing I was diagnosed w neuromediated hypotension w vaso vagel response and left bundle branch block. Basically I ve always fainted with dental or medical procedures or when under extreme stress. Also sudden fear causes my hands to go numb and tingly. If I have 1-2 drinks w alcohol I get the same sensation of numbness and to tingling in my hands. The other day I had a syncope episode after getting lidocane injections for back pain. After the syncope episode the doctors were monitoring my blood pressure bc it was very low and I was having the numbness in my hands for about 2O minutes. What causes the numbness and tingling sensation in these instances. Is it anything to worry about or a sign of underlying condition?

### output:

Hi, I am Chat Doctor.  I have read your question with care and understand your concerns. Let me try to help you Question : What causes numbness and tingling sensation in hands when under stress? Answer : 1. Stress causes Reduced Blood Flow to Peripheral Organs2. Because of this reduced Blood Flow to Peripheral Organs, Less Oxygen is delivered to Hands3. Because of less oxygen, the normal functions of nerves are affected 4. Because the normal function of nerves are affected, there is tingling sensation // Is it anything to worry about or a sign of underlying condition?//This is mostly due to the "neuromodulated hypotension w vast bagel response and left bundle branch block" and not a problem of hands. So If you take proper treatment for this problem, your tingling sensation will be solved Hope you found the answer helpful. If you need any clarification / have doubts / have additional questions / have follow-up questions, then please do not hesitate in asking again. I will be happy to answer your questions. Let me know if I can assist you further. Take care.