while giving blood sample for test, when the medical person inject the seringe near the elbow i felt a current throughout my right hand, that feling repeated two three times. then i went to him about the reason but he replied its not a problem. after three days when i close my palm i felt pain in my rist and while streching my hand i feel the same current throghout my hand. please reply whats the reason and criticality of the problem.
Hi I am Chat Doctor. .  In my opinion i don't think you should worry he may have touched a nerve usually the median nerve supplying your right hand which may make some nerve irritation and may take up to a week.  Some hot massaging and topical gels will be helpful and if the pain stayed for more than a week you may ask your physician for EEG (electroencephalograph) for nerve conduction to exclude any nerve injury i don't think it is a critical injury and hope it subsides soon. Please click THANK YOU and consider a 5-star rating with some positive feedback if the information was helpful. Hope the above information helps you, Any further clarifications feel free to ask.