vertigo like head swimming/dizziness/tripping/dropping things; vertigo like head swimming/dizziness/tripping/dropping things; vertigo like head swimming/dizziness/tripping/dropping things; vertigo like head swimming/dizziness/tripping/dropping things; Neurological symptom; This spontaneous case was reported by a consumer and describes the occurrence of NEUROLOGICAL SYMPTOM (Neurological symptom), GAIT DISTURBANCE (vertigo like head swimming/dizziness/tripping/dropping things), VERTIGO (vertigo like head swimming/dizziness/tripping/dropping things), ASTHENIA (vertigo like head swimming/dizziness/tripping/dropping things) and DIZZINESS (vertigo like head swimming/dizziness/tripping/dropping things) in a 55-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination.    Co-suspect products included non-company products TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE) for COVID-19 vaccination and ADALIMUMAB (HUMIRA) for Ankylosing spondylitis.    No Medical History information was reported.   In March 2021, the patient received first dose of TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE) (Intramuscular) 1 dosage form. In April 2021, received second dose of TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE) (Intramuscular) dosage was changed to 1 dosage form. On 01-Jul-2021, the patient started ADALIMUMAB (HUMIRA) (Subcutaneous) at an unspecified dose every two weeks. In November 2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. In December 2021, the patient experienced NEUROLOGICAL SYMPTOM (Neurological symptom). On an unknown date, the patient experienced GAIT DISTURBANCE (vertigo like head swimming/dizziness/tripping/dropping things), VERTIGO (vertigo like head swimming/dizziness/tripping/dropping things), ASTHENIA (vertigo like head swimming/dizziness/tripping/dropping things) and DIZZINESS (vertigo like head swimming/dizziness/tripping/dropping things). At the time of the report, NEUROLOGICAL SYMPTOM (Neurological symptom) had not resolved and GAIT DISTURBANCE (vertigo like head swimming/dizziness/tripping/dropping things), VERTIGO (vertigo like head swimming/dizziness/tripping/dropping things), ASTHENIA (vertigo like head swimming/dizziness/tripping/dropping things) and DIZZINESS (vertigo like head swimming/dizziness/tripping/dropping things) outcome was unknown. Not Provided          Concomitant product use was not provided by the reporter.  Action taken was reported as not applicable for the co-suspect vaccine TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE) with respect to all the events and drug discontinued for the co-suspect drug  ADALIMUMAB (HUMIRA) with respect to all the events.  The reporter's causality for the events of neurological symptoms, vertigo like head swimming/dizziness/tripping/dropping things was not provided with respect to co-suspect drug ADALIMUMAB (HUMIRA) and reasonable possible with respect to co-suspect vaccine TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE).  This case was identified as part of a retrospective clean-up activity where certain emails received in the Moderna mailbox were missed to be booked-in .  It was unknown if patient was enrolled in a COVID-19 Vaccine Trial.  Treatment information was not provided.   Reporter did not allow further contact