Having numbness in his arm and his hand; He can't open his hand up, and it goes numb and starts shaking real bad; He can't hard use that hand; Left arm can barely move now/His hands are like unable to move too; symptoms have gotten worse/It is getting worse; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team.  A 86 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 07Aug2021 (Batch/Lot number: unknown) at the age of 86 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Diabetes" (ongoing), notes: was diagnosed probably 10 years ago. He has not received any treatment. There were no concomitant medications. Vaccination history included: Bnt162b2 (Dose number: 1, Anatomical site of location: Right arm), administration date: 17Jul2021, when the patient was 86 years old, for COVID-19 immunization. The following information was reported: HYPOAESTHESIA (non-serious) with onset 09Aug2021, outcome "not recovered", described as "Having numbness in his arm and his hand"; TREMOR (non-serious) with onset 09Aug2021, outcome "not recovered", described as "He can't open his hand up, and it goes numb and starts shaking real bad"; HYPOKINESIA (non-serious) with onset 09Aug2021, outcome "not recovered", described as "He can't hard use that hand"; MOVEMENT DISORDER (non-serious) with onset 09Aug2021, outcome "not recovered", described as "Left arm can barely move now/His hands are like unable to move too"; CONDITION AGGRAVATED (non-serious) with onset 09Aug2021, outcome "not recovered", described as "symptoms have gotten worse/It is getting worse". The events "having numbness in his arm and his hand", "he can't open his hand up, and it goes numb and starts shaking real bad", "he can't hard use that hand", "left arm can barely move now/his hands are like unable to move too" and "symptoms have gotten worse/it is getting worse" were evaluated at the physician office visit and emergency room visit. Therapeutic measures were not taken as a result of hypoaesthesia, tremor, hypokinesia, movement disorder, condition aggravated.  Addition information: Caller was a caregiver, calling on behalf of his father. Caller stated his father received his first dose of the vaccine on 17Jul2021 and his second dose three weeks later, on 07Aug2021. Caller reported that his father was having numbness in his arm and his hand, he could not open his hand up, and it went numb and started shaking real bad, he could not  use that hand, and it would jump for 10 seconds and then it would stop.  Caller reported that his father's symptoms had gotten worse since visiting his primary care and the ED. His hands were like unable to move too was reported as worsened. His dad did not have problems with his arms until he took the second dose of the vaccine. His left arm can barely move now. His hands are like unable to move too. His dad has feeling in it sometimes and sometimes he did no. The doctor said they might have hit a nerve or something when they gave the second shot. Time of vaccination was given sometime in the morning, around 10-10:30.  This follow-up is being submitted to notify that the lot/batch number is not available despite the follow-up attempts made. Follow-up attempts completed. No further information is expected.