Hives; itching; Redness; Rash; Felt some pain if he pressed his arm; This spontaneous case was reported by an other health care professional and describes the occurrence of PAIN IN EXTREMITY (Felt some pain if he pressed his arm), URTICARIA (Hives), PRURITUS (itching), ERYTHEMA (Redness) and RASH (Rash) in a 77-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 029K20A and 039K20A) for COVID-19 vaccination.     The patient's past medical history included Coronary occlusion (Improvement exercise , diet ,meds and Balloon) in February 1994, Myocardial infarction, Cardiac arrest (Improvement with exercise ,diet and meds and CABG x2) since 05-Nov-2017, Open heart surgery (No medical history reported.), Pacemaker insertion (cardiac) (of optimetry 03-31-2021) since 10-Nov-2018, Biopsy (Dermatologist took a biopsy of three spots.), Implantable cardioverter defibrillator insertion since 10-Nov-2018, Coronary stent placement (Improvement with exercise ,diet and meds. 1 stent) in September 2005 and CABG (Doing well-less stress, retired from practice.) since 07-Nov-2017. Concurrent medical conditions included Anaphylactic shock, Iodine allergy, Hay fever, Hives since 1977 and Anaphylaxis in 1983. Concomitant products included ALPRAZOLAM for Anxiety, CARVEDILOL for BP lowered, ATORVASTATIN and EZETIMIBE for Cholesterol low, ACETYLSALICYLIC ACID (ASPIRIN LOW) for Clot blood, OMEPRAZOLE for Esophageal disease NOS, VITAMIN D3 and CALCIUM, MAGNESIUM (CALCIUM + MAGNESIUM) for Nutritional supplementation, SERENOA REPENS FRUIT (SAW PALMETTO [SERENOA REPENS FRUIT]) for PSA, MULTIVITAMIN [VITAMINS NOS] for Supplementation therapy, UBIDECARENONE (COQ10 [UBIDECARENONE]) for an unknown indication.   On 28-Dec-2020 at 2:00 AM, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 27-Jan-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 28-Dec-2020, the patient experienced PAIN IN EXTREMITY (Felt some pain if he pressed his arm). On 06-Feb-2021,  after starting mRNA-1273 (Moderna COVID-19 Vaccine), the patient experienced URTICARIA (Hives), PRURITUS (itching), ERYTHEMA (Redness) and RASH (Rash). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) (oral) from 05-Jan-2021 to 06-Jan-2021 at a dose of 25 milligram and PREDNISONE (oral) on 12-Jan-2021 at a dose of 40 milligram once a day. On 20-Feb-2021, URTICARIA (Hives), PRURITUS (itching), ERYTHEMA (Redness) and RASH (Rash) had resolved. At the time of the report, PAIN IN EXTREMITY (Felt some pain if he pressed his arm) had resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 12-Jan-2021, Biopsy: inconclusive (Inconclusive) Inconclusive. Dermatologist took 3 shots of biopsy.. On 12-Jan-2021, Eosinophil count: inconclusive Inconclusive. On 18-Jan-2021, Blood pressure measurement: 105/71 mmHg (Inconclusive) 105/71. On 18-Jan-2021, Body temperature: 97.6 (Inconclusive) 97.6. On 18-Jan-2021, Heart rate: 62 Inconclusive. On 18-Jan-2021, Respiratory rate: inconclusive breaths per minute (Inconclusive) O2 98.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Has also been taking baths with apple cyder vinegar, salts and baking soda (different combinations of these, and all three together as well).   This case was linked to MOD-2021-006400.   Most recent FOLLOW-UP information incorporated above includes: On 15-Apr-2021: Added suspect administration. Updated suspect product administration time. On 07-Jun-2021: Non-significant follow up appended On 07-Jun-2021: Follow- up received on 7-06-2021 and not included any new information.