"the hives got worse"; "one bump is about 3 or 4 inches away from injection site"; hives itch in the morning; "my blood pressure went sky high" after the second dose; "can't get the systolic down less than 145"; "my blood pressure goes up at night and I can't seem to stabilize it long"; hives "calm down" after taking Benadryl; "they are really bad"; "I got two bumps today, one on the front of the right knee and one on the back of the right knee"; "there was a little bit of discomfort around the left arm"; arm "felt puffy" around the injection site; arm "felt warm" around the injection site; This spontaneous case was reported by a non-health professional and describes the occurrence of URTICARIA ("the hives got worse"), INJECTION SITE MASS ("one bump is about 3 or 4 inches away from injection site"), PRURITUS (hives itch in the morning), LIMB DISCOMFORT ("there was a little bit of discomfort around the left arm") and SKIN SWELLING (arm "felt puffy" around the injection site) in a 77-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 021C21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No medical history was provided by the reporter.  Concomitant products included atorvastatin 80 mg, metformin 500 mg and lisinopril 20 mg.    On 07-May-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 07-May-2021, the patient experienced LIMB DISCOMFORT ("there was a little bit of discomfort around the left arm"), SKIN SWELLING (arm "felt puffy" around the injection site) and INJECTION SITE WARMTH (arm "felt warm" around the injection site). On 09-May-2021, the patient experienced URTICARIA ("the hives got worse"). 09-May-2021, the patient experienced INJECTION SITE MASS ("one bump is about 3 or 4 inches away from injection site"), PRURITUS (hives itch in the morning), BLOOD PRESSURE INCREASED ("my blood pressure went sky high" after the second dose), BLOOD PRESSURE SYSTOLIC INCREASED ("can't get the systolic down less than 145"), FEELING ABNORMAL ("my blood pressure goes up at night and I can't seem to stabilize it long"), FEELING OF RELAXATION (hives "calm down" after taking Benadryl), FEELING ABNORMAL ("they are really bad") and MASS ("I got two bumps today, one on the front of the right knee and one on the back of the right knee"). On 09-May-2021, LIMB DISCOMFORT ("there was a little bit of discomfort around the left arm"), SKIN SWELLING (arm "felt puffy" around the injection site) and INJECTION SITE WARMTH (arm "felt warm" around the injection site) had resolved. At the time of the report, URTICARIA ("the hives got worse"), INJECTION SITE MASS ("one bump is about 3 or 4 inches away from injection site"), PRURITUS (hives itch in the morning), BLOOD PRESSURE INCREASED ("my blood pressure went sky high" after the second dose), BLOOD PRESSURE SYSTOLIC INCREASED ("can't get the systolic down less than 145"), FEELING ABNORMAL ("my blood pressure goes up at night and I can't seem to stabilize it long"), FEELING OF RELAXATION (hives "calm down" after taking Benadryl), FEELING ABNORMAL ("they are really bad") and MASS ("I got two bumps today, one on the front of the right knee and one on the back of the right knee") outcome was unknown.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   No laboratory details were  provided.  No treatment medications were reported.  Action taken with mRNA-1273 in response to the events was not applicable.