soreness in arm tired; At night I had my first episode of dizziness and loss of balance about 20 minutes later I had a second episode of dizziness and complete loss of balance.; At night I had my first episode of dizziness and loss of balance about 20 minutes later I had a second episode of dizziness and complete loss of balance.; Welts in his inner thighs; This case was initially received via an unknown source (no reference has been entered for a health authority or license partner) on 03-Mar-2021. The most recent information was received on 02-Aug-2021 and was forwarded to Moderna on 02-Aug-2021.    This spontaneous case was reported by a consumer and describes the occurrence of URTICARIA (Welts in his inner thighs), MUSCULAR WEAKNESS (soreness in arm tired), DIZZINESS (At night I had my first episode of dizziness and loss of balance about 20 minutes later I had a second episode of dizziness and complete loss of balance.) and BALANCE DISORDER (At night I had my first episode of dizziness and loss of balance about 20 minutes later I had a second episode of dizziness and complete loss of balance.) in a 76-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination.     The patient's past medical history included Macular telangiectasia. Concurrent medical conditions included Pollen allergy (Runny nose, eyes sneezy) since 20-Jan-1957, Allergy to molds (Runny nose, eyes sneezy), Dust allergy (Runny nose, eyes sneezy), Allergy to animals (Runny nose, eyes sneezy) and Type 2 diabetes mellitus. Concomitant products included LISINOPRIL, FUROSEMIDE, ALLOPURINOL and INSULIN DEGLUDEC, LIRAGLUTIDE (XULTOPHY) for Diabetes.   On 05-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 03-Mar-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 03-Mar-2021, the patient experienced URTICARIA (Welts in his inner thighs). On an unknown date, the patient experienced MUSCULAR WEAKNESS (soreness in arm tired), DIZZINESS (At night I had my first episode of dizziness and loss of balance about 20 minutes later I had a second episode of dizziness and complete loss of balance.) and BALANCE DISORDER (At night I had my first episode of dizziness and loss of balance about 20 minutes later I had a second episode of dizziness and complete loss of balance.). The patient was treated with EPINEPHRINE at an unspecified dose and frequency. At the time of the report, URTICARIA (Welts in his inner thighs), MUSCULAR WEAKNESS (soreness in arm tired), DIZZINESS (At night I had my last episode of dizziness and loss of balance about 20 minutes later I had a last episode of dizziness and complete loss of balance.) and BALANCE DISORDER (At night I had my last episode of dizziness and loss of balance about 20 minutes later I had a last episode of dizziness and complete loss of balance.) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Blood glucose increased: high (High) 188. On an unknown date, Blood pressure decreased: 105/55 (Low) Blood Pressure Decreased. On an unknown date, Heart rate: 62 (Inconclusive) Pulse Rate 62.. On an unknown date, Oxygen saturation: 95 (Inconclusive) Oxygen saturation 95.         Treatment information includes Antihistamines, Steroids, Oxygen, Other.   Most recent FOLLOW-UP information incorporated above includes: On 02-Aug-2021: Significant follow up received on 02-aug-2021 contains  event added, other relevant history was updated, concomitant medications was updated, Dosage form was updated, Lab data was updated. On 02-Aug-2021: Non-significant follow up received on 02-aug-2021 contains No new information.