fluctuating rapid heartbeat / my pulses goes from like 67 to 134; its feels like my muscles in my face not working well ,specially in my mouth itsreally concerning to me; almost collapsed while cooking; light headed and dizzy; cold tingling extremities; cold tingling extremities, buzzing , tingling and vibrating feeling; fatigue and exhaustion; tremors in face; my thyroid is been out of range though I am trying to get that back but I amreally worry; felt horrible; muscle weakness; instable in walking; chills; I am really worry; super strong neurological side effects/Having major neurological symptoms; This is a spontaneous report from a contactable consumer (patient). A 53-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Lot Number: EW0172), via an unspecified route of administration, administered in Arm Left on 28Apr2021 at the age of 53 years as 2nd dose, single for COVID-19 immunization. Medical history included hypothyroidism, hypoglycaemia, small intestinal bacterial overgrowth, Epstein-Barr virus infection, mononucleosis (three times when I was younger), hearing impairment, and post menopausal from an unknown date. The patient reported that she was in good shape. Prior to all this she could walk 15000 steps a day and was in a good health. Concomitant medications included thyroid (ARMOUR THYROID) taken for hypothyroidism; valaciclovir hydrochloride (VALTREX) taken for Epstein-Barr virus infection; cetirizine hydrochloride (ZYRTEC) taken for sinus disorder, manganese taken for supplementation therapy; fish oil (OMEGA 3) taken for supplementation therapy; vitamin B6 taken for supplementation therapy; and vitamin B12 taken for supplementation therapy, all start and stop dates were not reported. The patient previously received the first dose of bnt162b2 on 07Apr2021 (lot number: ER8729) at the age of 53 years for COVID-19 immunization and experienced neurologic symptoms, body ache, chills, extreme fatigue, tingling in my extremities, like a buzzing sensation, vibrating sensation in my body, heart palpitation, cold extremities, extreme muscle weakness, "to the point even if even after making dinner I would feel like I was going collapse, and I could barely open my hand muscles", fluctuating rapid heart beat, muscles in my face not working, thyroid is been out of range, super light headed. The patient also received a flu shot on an unspecified date for immunization and had the flu. The patient reported having serious side effects to the vaccine. On 29Apr2021, 30 hours after the second dose, the patient had super strong neurological side effects/having major neurological symptoms. On an unspecified date after the second dose, the patient reported that she had fluctuating rapid heartbeat/my pulses goes from like 67 to 134, feels like my muscles in my face was not working well, especially in my mouth its really concerning, almost collapsed while cooking, light headed and dizzy, cold tingling extremities, buzzing, tingling and vibrating feeling, fatigue and exhaustion, tremors in face, thyroid has been out of range though I am trying to get that back but I am really worry, felt horrible, had muscle weakness, instable in walking, and chills. The patient underwent lab tests and procedures which included blood count: unknown results, Epstein-Barr virus test (viral load): heavy load, heart rate: 67, then 134, thyroid function test: out of range all on unspecified dates. The patient had a heart rate : 130 on 09May2021. The patient reported no treatment for the events. The outcome of the events was unknown.   No follow-up attempts are needed. No further information is expected.