Had a bit of dizziness and it felt like a muscle spasm through her head; Had a bit of dizziness and it felt like a muscle spasm through her head; Fever; Severe fatigue; Headache; Muscle ache; Restless; Feeling really bad; This is a spontaneous report from a contactable consumer (patient). A 76-years-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot Number: EN6198), via an unspecified route of administration, on 25Feb2021 11:30 (at the age of 76-year-old), left arm, as dose 2, single for COVID-19 immunization. The patient medical history was not reported. Concomitant therapy reported as "Yes" (Patient just taken her two regular medicines and besides that a few over the counter medicines. Patient had taken them for years and years and years). Family Medical History Relevant to AE(s) was reported as none. Historical vaccine reported as BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot Number: ENS318), via an unspecified route of administration, on 04Feb2021 (at the age of 76-year-old), left arm, as dose 1, single for COVID-19 immunization. On 26Mar2021, the patient experienced severe fatigue, headache, muscle ache, restless on 25Mar2021, fever on 26Mar2021, had a bit of dizziness and it felt like a muscle spasm through her head on 28Mar2021, feeling really bad on 25Mar2021. Prior vaccination within 4 weeks reported as none. Patient did not had any symptoms at all and felt really good and had no problems, but on 26Mar2021, actually the night of 25Mar2021 patient got to feeling really bad. The next day when patient woke up she had severe fatigue, a headache, and muscle ache. It felt like Covid symptoms. Patient didn't do anything that day except lie around on the couch. On Saturday 27Mar2021 patient felt much better and had a Covid test that came out negative. It was quite a while after the fact that she had her symptoms. The fatigue went away by the next day 27Mar2021. Patient's headache went away by the next day. Patient forgot that she had one other thing. She doesn't know if it is connected to the Covid symptoms she experienced, but on Sunday 28Mar2021 she had almost a dizziness. Patient had a bit of dizziness and it felt like a muscle spasm through her head. Patient had a swarm of them. It didn't affect her vision or make her nauseous or anything like that. It went on for about an hour and then totally disappeared. Patient clarified that it was not so much dizziness, she had no dizziness really. She's recovered completely from it. Patient clarified when she was feeling really bad on the night of 25Mar2021, she usually sleeps really well but was restless that night. The restlessness went away by 27Mar2021. Symptoms started when she woke up in the morning, including a fever. Patient had it about the whole day on 26Mar2021. It was gone by the next morning and recovered completely. Emergency Room and Physician Office reported as no. The patient underwent lab tests and procedures which included sars-cov-2 test: negative, on unspecified date. The clinical outcome of severe fatigue, headache, muscle ache, restless, fever, had a bit of dizziness, feeling really bad was recovered on 27Mar2021 and dizziness and muscle spasm recovered on 28Mar2021.  No follow-up attempts are needed. No further information is expected.