Next morning, I got up for breakfast, felt shaky; Next morning, I got up for breakfast, felt shaky, suddenly started shaking/body shakes; sweating very heavily (dripping from my face); couldn't stand up, tried and fell to the floor, had to lay there, couldn't get up without help; couldn't stand up, tried and fell to the floor, had to lay there, couldn't get up without help; Spouse helped me to the bathroom, didn't vomit, but some diarrhea; About 8 hours after my shot, I started having intense pain at the shot area.; and it spread up behind my head/neck and down to my knees, left side; and it spread up behind my head/neck and down to my knees, left side; and it spread up behind my head/neck and down to my knees, left side; The patient received the third/booster dose of BNT162b2; Chills; Nausea; Too painful to sleep, chills, nausea; This is a spontaneous report from a contactable consumer, the patient. A 58-year-old non-pregnant female patient received the third dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: 32030BD) via an unspecified route of administration in the arm left on 05Nov2021 at 13:00 (at the age of 58-years-old) as a single dose for COVID-19 immunisation. The medical history included osteoarthritis, arthritis, allergy to diary and hay fever. Prior to the vaccination, the patient was not diagnosed with COVID-19. The patient did not receive any other vaccines within four weeks prior to the vaccination. The concomitant medications included paracetamol (TYLENOL) for arthritis and antihistamines (unspecified) for allergy, both from unknown dates and unknown if ongoing. The patient previously received the first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: ER8727) via an unspecified route of administration in the arm left on 21Mar2021 at 10:30 (at the age of 58-years-old) and second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: EW0153) via an unspecified route of administration in the arm left on 11Apr2021 at 10:45 (at the age of 58-years-old) as a single dose for COVID-19 immunisation. On 05Nov2021 at 21:00, about 8 hours after the shot, the patient started have intense pain at the shot area and it spread up behind her head/neck and down to her knees, left side. It was too painful to sleep, chills and nausea. On 06Nov2021, next morning, when the patient had got up for breakfast, she felt shaky and suddenly started shaking, sweating very heavily (dripping from her face) and couldn't stand up. She tried and fell to the floor and had to lay there and couldn't get up without help. Her spouse helped her to the bathroom, she didn't vomit but had some diarrhea, body shakes and after an hour or so of rest, it passed. The patient stated that she did not have this kind of a reaction to the first two shots. The adverse events did not result in doctor or other healthcare professional office or clinic visit and emergency room or department or urgent care. Therapeutic measures were not taken as a result of the reported events. Since the vaccination, the patient had not been tested for COVID-19. The clinical outcome of the events intense pain at the shot area, and it spread up behind head/neck and down to knees, left side, too painful to sleep, chills and nausea were resolved on an unknown date in Nov2021, while the clinical outcome of the events felt shaky, shaking/body shakes, sweating very heavily, couldn't stand up, fell to the floor, couldn't get up without help and diarrhea were resolved on 06Nov2021.