pain in the feet, going from one to the other; pain moving to their back; limbs are asleep, it is not continuous, though; difficult for them to go down or up the stairs because they cannot bend their feet; limp on the right foot/difficulty walking with their right leg/need to stand with both feet per each step going up and down the stairs/when getting up from a sit they need to used their hands to help themselves; pain in the feet, going from one to the other; side effect from the vaccine; arthritis; This spontaneous case was reported by a consumer and describes the occurrence of PAIN IN EXTREMITY (pain in the feet, going from one to the other), BACK PAIN (pain moving to their back), LIMB DISCOMFORT (limbs are asleep, it is not continuous, though), MOBILITY DECREASED (difficult for them to go down or up the stairs because they cannot bend their feet) and GAIT DISTURBANCE (limp on the right foot/difficulty walking with their right leg/need to stand with both feet per each step going up and down the stairs/when getting up from a sit they need to used their hands to help themselves) in a 69-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 08-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 08-May-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient experienced PAIN IN EXTREMITY (pain in the feet, going from one to the other), BACK PAIN (pain moving to their back), LIMB DISCOMFORT (limbs are asleep, it is not continuous, though), MOBILITY DECREASED (difficult for them to go down or up the stairs because they cannot bend their feet), GAIT DISTURBANCE (limp on the right foot/difficulty walking with their right leg/need to stand with both feet per each step going up and down the stairs/when getting up from a sit they need to used their hands to help themselves), PAIN (pain in the feet, going from one to the other), VACCINATION COMPLICATION (side effect from the vaccine) and ARTHRITIS (arthritis). At the time of the report, PAIN IN EXTREMITY (pain in the feet, going from one to the other), BACK PAIN (pain moving to their back), LIMB DISCOMFORT (limbs are asleep, it is not continuous, though), MOBILITY DECREASED (difficult for them to go down or up the stairs because they cannot bend their feet), GAIT DISTURBANCE (limp on the right foot/difficulty walking with their right leg/need to stand with both feet per each step going up and down the stairs/when getting up from a sit they need to used their hands to help themselves), PAIN (pain in the feet, going from one to the other), VACCINATION COMPLICATION (side effect from the vaccine) and ARTHRITIS (arthritis) outcome was unknown.            HCP advice the patient to take Tylenol or  ibuprofen.  No concomitant medications information was reported. No treatment medications were provided.   Most recent FOLLOW-UP information incorporated above includes: On 08-Sep-2021: Added Events were difficulty walking with their right leg,need to stand with both feet per each step going up and down the stairs,when getting up from a sit they need to used their hands to help themselves,side effect from the vaccine, arthritis On 08-Sep-2021: Non-Significant Follow-up