arthritis, patient describes herself as crippled; flu shot made arthritis worse; significant pain in both her arms, hands, and fingers; fall; Initial information received on 31-Oct-2019 regarding an unsolicited valid serious case received from a consumer/non-hcp.  This case involves female patient (age unknown) who experienced arthritis, patient describes herself as crippled (arthritis) and fall (fall), while she received vaccine INFLUENZA USP TRIVAL A-B HIGH DOSE SUBVIRION VACCINE [FLUZONE HIGH DOSE].  The patient's past medical history included Finger deformity. The patient's past vaccination(s) included influenza vaccine. The patient's past medical treatment(s) and family history were not provided. At the time of the event, the patient had ongoing Arthritis.   On 30-Sep-2019, the patient received a 0.5 mL dose of suspect injection INFLUENZA USP TRIVAL A-B HIGH DOSE SUBVIRION VACCINE lot VD213AB via unknown route in the left deltoid.  On an unknown date, the patient developed a serious arthritis, patient describes herself as crippled (arthritis), significant pain in both her arms, hands, and fingers (pain in extremity) and flu shot made arthritis worse (condition aggravated)  (Unknown latency) following the administration of INFLUENZA USP TRIVAL A-B HIGH DOSE SUBVIRION VACCINE. All events were assessed as medically significant. It was also reported Then later the right arm also began hurting "in the last few days". Now both arms hurt and she describes herself as "crippled". She cannot use her hands at all. She took a course of steroids for one week for the pain. She has received flu shots in the past but never had a reaction. She believes this is the first year that she received high-dose vaccine, but she incorrectly based this on assuming this was the first year that high-dose was available. She did not have records of which vaccines she received in the past. She says she heard that a lot of people are saying the high dose hurts more than normal. Her doctor told her that maybe she had enough antibodies from previous vaccines and might not need another next year. When you push on a certain spot it hurts. She is wearing braces on both arms. She stated that she also had a fall since receiving Fluzone High Dose.  On an unknown date, the patient had fall (Unknown latency) following the administration of INFLUENZA USP TRIVAL A-B HIGH DOSE SUBVIRION VACCINE.  On an unknown date, Relevant laboratory test results included: X-ray: [arthritis].  Final diagnosis was fall and arthritis, patient describes herself as crippled.   A corrective treatment was received as course of steroids for one week for the pain.  When push on a certain spot it hurts. patient is wearing braces on both arms.  The outcome of the all events were unknown.; Sender's Comments: This case concerns female patient of an unknown age unknown who experienced arthritis, pain in extremity , condition aggravated and fall after vaccination with FLUZONE HIGH DOSE. The time to onset is unknown. Additional information regarding patient's past medical history, condition at the time of vaccination, lab data excluding other predisposing etiologies would be needed for complete assessment of the case. Based upon the reported information, the role of the vaccine cannot be assessed.