Left arm has been tingling and numbing as well as between my thumb and index finger on my left arm which was the arm I got my vaccine; numbness and tingling on my left arm; my entire arm is swollen and my hand; pain in her left hand; She has a nerve twitch between her thumb and index finger when she holds up an "L". She was able to see her thumb pulsating and shakes; Grip and strength to hold even just like a 16 ounce water bottle is not what it should be; This is a spontaneous report from a contactable consumer or other non-health professional (patient). A 24-year-old female patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot number: EW0172) via an unspecified route of administration in left arm on 21Apr2021 (at the age of 24-year-old) as dose 2, single for COVID-19 immunization. There was no relevant medical history and concomitant medications of the patient. Patient previously received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot number: ER8734) via an unspecified route of administration on an unspecified date as single dose for COVID-19 immunization. On an unspecified date in Apr2021, two days after receiving second dose of vaccination, patient experienced complete numbness and tingling on her entire left arm as well as between my thumb and index finger on my left arm [the arm she got the vaccine], all the way down to her fingers and that lasted for about 6-7 hours. She had noticed it started again and couple of days ago. The 2nd time now it hasn't gone away. It was close to 3 full days now. It's been about 65 hours. On an unspecified date in Apr2021, patient entire arm and left hand was swollen, Swelling around her hand. These were the same symptoms she experienced after the 2nd dose. She has pain in her left hand. Her 3 fingers go numb and then 2 fingers tingle and then rotate. She has a nerve twitch between her thumb and index finger when she holds up an "L". She was able to see her thumb pulsating and shakes, could physically see what appears to be couple nerve like twitching. Her grip and strength to hold even just like a 16-ounce water bottle was not what it should be. Patient called just to kind of see if what she have been experiencing since her second dose has come up, she didn't really want to go to the internet just because there was so much information out there, you can just get into dark hole when you don't have personal knowledge on seeing. So, she received her second Pfizer dose on 21Apr2021 and she had this happen one other time, but unfortunately was now on about 50 hours of this issue and this has only come up since her vaccine, specifically, actually her second dose. Patient left arm has been tingling and numbing as well as between her thumb and index finger on her left arm which was the arm she got her vaccine, could physically see what appears to be couple nerve like twitching. Like she said was going on 50 hours of this, her grip and strength to hold even just like a 16 ounce water bottle is not what it should be. So she was just calling to see if this has been a delayed symptom, you guys have seen, if so you guys have any information on this. Patient checked for like swelling around any issue on her hand, itself on that arm, was it as swollen as compared to her other hand, she don't have any other concern. Patient did not receive any treatment in response to the events. No lab tests were done. Outcome of the events were unknown.  No follow-up attempts are possible. No further information is expected.