intense/severe joint pain; trouble walking; head pressure; slurred speech; stuttering speech; vision sensitivity to light at times; brain fog/when she thinks too much her brain hurts/It threw her for a loop; memory issues/cannot remember things for a long period of time/It threw her for a loop; Fatigue; intense headache/cannot put her head on a pillow because it's painful; lost her job of 20 years; temporary disability; still have neurological issues 7 months later; This spontaneous case was reported by a consumer and describes the occurrence of NEUROLOGICAL SYMPTOM (still have neurological issues 7 months later), ARTHRALGIA (intense/severe joint pain), GAIT DISTURBANCE (trouble walking), HEAD DISCOMFORT (head pressure), DYSARTHRIA (slurred speech), DYSPHEMIA (stuttering speech), PHOTOPHOBIA (vision sensitivity to light at times), FEELING ABNORMAL (brain fog/when she thinks too much her brain hurts/It threw her for a loop), MEMORY IMPAIRMENT (memory issues/cannot remember things for a long period of time/It threw her for a loop), FATIGUE (Fatigue), HEADACHE (intense headache/cannot put her head on a pillow because it's painful), IMPAIRED WORK ABILITY (lost her job of 20 years) and DISABILITY (temporary disability) in a 54-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 047C21A) for COVID-19 vaccination.     Concomitant products included MONTELUKAST, VENLAFAXINE, TRAZODONE, ACETYLSALICYLIC ACID (ASPIRIN 81), FISH OIL, NICOTINIC ACID (NIACIN) and MULTIVITAMIN [VITAMINS NOS] for an unknown indication.    On 30-Oct-2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 23-Mar-2021, the patient experienced NEUROLOGICAL SYMPTOM (still have neurological issues 7 months later) (seriousness criteria disability and medically significant). On an unknown date, the patient experienced ARTHRALGIA (intense/severe joint pain) (seriousness criteria disability and medically significant), GAIT DISTURBANCE (trouble walking) (seriousness criteria disability and medically significant), HEAD DISCOMFORT (head pressure) (seriousness criteria disability and medically significant), DYSARTHRIA (slurred speech) (seriousness criteria disability and medically significant), DYSPHEMIA (stuttering speech) (seriousness criteria disability and medically significant), PHOTOPHOBIA (vision sensitivity to light at times) (seriousness criteria disability and medically significant), FEELING ABNORMAL (brain fog/when she thinks too much her brain hurts/It threw her for a loop) (seriousness criteria disability and medically significant), MEMORY IMPAIRMENT (memory issues/cannot remember things for a long period of time/It threw her for a loop) (seriousness criteria disability and medically significant), FATIGUE (Fatigue) (seriousness criteria disability and medically significant), HEADACHE (intense headache/cannot put her head on a pillow because it's painful) (seriousness criteria disability and medically significant), IMPAIRED WORK ABILITY (lost her job of 20 years) (seriousness criteria disability and medically significant) and DISABILITY (temporary disability) (seriousness criteria disability and medically significant). The patient was treated with GABAPENTIN for Headache, at an unspecified dose and frequency. At the time of the report, NEUROLOGICAL SYMPTOM (still have neurological issues 7 months later) had not resolved and ARTHRALGIA (intense/severe joint pain), GAIT DISTURBANCE (trouble walking), HEAD DISCOMFORT (head pressure), DYSARTHRIA (slurred speech), DYSPHEMIA (stuttering speech), PHOTOPHOBIA (vision sensitivity to light at times), FEELING ABNORMAL (brain fog/when she thinks too much her brain hurts/It threw her for a loop), MEMORY IMPAIRMENT (memory issues/cannot remember things for a long period of time/It threw her for a loop), FATIGUE (Fatigue), HEADACHE (intense headache/cannot put her head on a pillow because it's painful), IMPAIRED WORK ABILITY (lost her job of 20 years) and DISABILITY (temporary disability) outcome was unknown.            Patient received her first vaccine on 19-Feb-2021 and second shot on 19-Mar-2021 (lot 06C21A) and booster shot on 30-Oct-2021 (lot: 047C21A) in the left deltoid. Patient diagnosed with COVID-19 on 23-Mar-2021.  Company Comment: This case concerns a  54-year-old, female patient with concomitant medications of tradzodone, who experienced the unexpected serious events of Neurological symptom, Arthralgia, Gait disturbance, Head discomfort, Dysarthria, Dysphemia, Feeling abnormal, Memory impairment, Fatigue, Headache, Impaired work ability, Disability. The events occurred approximately on an unknown day after the unknown dose of Moderna Covid-19 Vaccine. The rechallenge was not applicable, as the event happened after the unknown dose. The use of concomitant medication trazodone remains a confounder. The benefit-risk relationship of Moderna Covid-19 Vaccine in not affected by this report..   This case was linked to MOD-2021-264134, MOD-2021-264134 (Patient Link).; Sender's Comments: This case concerns a  54-year-old, female patient with concomitant medications of tradzodone, who experienced the unexpected serious events of Neurological symptom, Arthralgia, Gait disturbance, Head discomfort, Dysarthria, Dysphemia, Feeling abnormal, Memory impairment, Fatigue, Headache, Impaired work ability, Disability. The events occurred approximately on an unknown day after the unknown dose of Moderna Covid-19 Vaccine. The rechallenge was not applicable, as the event happened after the unknown dose. The use of concomitant medication trazodone remains a confounder. The benefit-risk relationship of Moderna Covid-19 Vaccine in not affected by this report..