Joint pain; loss of balance; increased drowsiness; Headaches induced by allergies; Limited neck mobility/lessened neck pain but still limited mobility; Scalp tenderness and sensitivity; Significant migraines/debilitating migraines (light & noise sensitivity, covers whole head, pulsating, sharp pain, loss of balance, increased drowsiness); Sharp pains in neck/Neck pain; Sharp pains in neck, ear, head pain (similar to an ear infection pain); head pain/sharp pains in lower head/covers whole head, pulsating, sharp pain/Increase in headaches but no longer centralized to back of head/ headaches induced by allergies; Nausea; Neck stiffness; This is a spontaneous report from a contactable Other Health Professional (patient). A 29-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE) Solution for injection, lot number was unknown, via an unspecified route of administration in the right arm on 22Dec2020 07:30 at a single dose for COVID-19 immunization. Medical history was none. There were no concomitant medications. The patient was not pregnant. The patient had not receive any other vaccines within 4 weeks prior to the COVID vaccine. It was reported that the patient received vaccine in Tuesday (22Dec2020). The following Sunday (27Dec2020) at 12:00, she had nausea and neck stiffness. On Monday (28Dec2020), she had sharp pains in neck, ear, head pain (similar to an ear infection pain), and nausea. She used teledmed appt and got antibiotics (unspecified). On Tuesday (29Dec2020), she had significant migraines, limited neck mobility, sharp pains in neck and lower head, scalp tenderness and sensitivity which felt like whiplash when she moved her head w/ her head feeling "swimmy". She tried to see urgent care but was to go to ER. On Wednesday (30Dec2020), there was lessened neck pain but still limited mobility, increased in headaches but no longer centralized to back of head. She went to ER and they said that she had headaches induced by allergies. She mentioned that she never had migraines or allergies in her life. They also reported no ear infection. She did complete CT Scan with no concerning results on 30Dec2020. On Thursday (31Dec2020) & Friday, she no longer has neck pain but with continued nausea, joint pain, debilitating migraines (light & noise sensitivity, covers whole head, pulsating, sharp pain, loss of balance, increased drowsiness). The events were reported as non-serious. The treatment received for the adverse events included fluids, pain & nausea meds. The patient was not diagnosed with Covid prior to vaccination. She was tested for covid post vaccination on 30Dec2020 through a nasal swab with negative result. The outcome of the events neck stiffness, ear pain, scalp tenderness and sensitivity, and 'Headaches induced by allergies' was unknown; while neck pain was recovered on 31Dec2020. The outcome of the events 'significant migraines/debilitating migraines', nausea, limited neck mobility, head pain/Headache, joint pain, loss of balance, and increased drowsiness was not recovered.  Information on the lot/batch number has been requested.; Sender's Comments: A causal association between BNT162B2 and the event migraine cannot be excluded based on a compatible temporal relation between vaccination and onset of event. The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to RAs, Ethics Committees, and Investigators, as appropriate.