Pounding of the heart; Hives on my neck and chin on both sides/hives were very painful/it was flaky/hives were very painful because it was in her hairline; Purple purpura on my arms/I still have purple purpura/great big areas of purple purpura/doesn't look good; Cramping in my stomach; Diarrhea; Constipation; Rash all over my face/kept coming and going/rash on my head that was like baby's cradle cap/Rash would itch; Muscle aches continued for 6 months/achiness in my back/achiness in legs/really bad muscle ache/the muscles were the worst; Joint pain is still continued along with the muscles; Had splitting headaches/encompassed my entire head/headache for 3 days/head was going to explode; Went down to the back of my neck; This spontaneous case was reported by a consumer and describes the occurrence of NECK PAIN (Went down to the back of my neck), PALPITATIONS (Pounding of the heart), URTICARIA (Hives on my neck and chin on both sides/hives were very painful/it was flaky/hives were very painful because it was in her hairline), PURPURA (Purple purpura on my arms/I still have purple purpura/great big areas of purple purpura/doesn't look good) and ABDOMINAL PAIN UPPER (Cramping in my stomach) in a 73-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 045B21A and 013B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Arthralgia (She took prednisone and diclofenac. She got too many side effects from diclofenac, so she weaned herself off it.). Concomitant products included HYDROCHLOROTHIAZIDE, CITALOPRAM, OXYBUTYNIN, OSTEO BI-FLEX TRIPLE STRENGTH WITH VITAMIN D, CORTISONE, METOPROLOL SUCCINATE (TOPROL) and VITAMIN D3 for an unknown indication.   On 07-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 01-May-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 12-May-2021, the patient experienced NECK PAIN (Went down to the back of my neck) and HEADACHE (Had splitting headaches/encompassed my entire head/headache for 3 days/head was going to explode). On an unknown date, the patient experienced PALPITATIONS (Pounding of the heart), URTICARIA (Hives on my neck and chin on both sides/hives were very painful/it was flaky/hives were very painful because it was in her hairline), PURPURA (Purple purpura on my arms/I still have purple purpura/great big areas of purple purpura/doesn't look good), ABDOMINAL PAIN UPPER (Cramping in my stomach), DIARRHOEA (Diarrhea), CONSTIPATION (Constipation), RASH PRURITIC (Rash all over my face/kept coming and going/rash on my head that was like baby's cradle cap/Rash would itch), MYALGIA (Muscle aches continued for 6 months/achiness in my back/achiness in legs/really bad muscle ache/the muscles were the worst) and ARTHRALGIA (Joint pain is still continued along with the muscles). The patient was treated with PREDNISONE for Joint pain, at an unspecified dose and frequency and DICLOFENAC for Joint pain, at an unspecified dose and frequency. On 14-May-2021, NECK PAIN (Went down to the back of my neck) and HEADACHE (Had splitting headaches/encompassed my entire head/headache for 3 days/head was going to explode) had resolved. At the time of the report, PALPITATIONS (Pounding of the heart) and MYALGIA (Muscle aches continued for 6 months/achiness in my back/achiness in legs/really bad muscle ache/the muscles were the worst) had resolved, URTICARIA (Hives on my neck and chin on both sides/hives were very painful/it was flaky/hives were very painful because it was in her hairline), PURPURA (Purple purpura on my arms/I still have purple purpura/great big areas of purple purpura/doesn't look good), RASH PRURITIC (Rash all over my face/kept coming and going/rash on my head that was like baby's cradle cap/Rash would itch) and ARTHRALGIA (Joint pain is still continued along with the muscles) had not resolved and ABDOMINAL PAIN UPPER (Cramping in my stomach), DIARRHOEA (Diarrhea) and CONSTIPATION (Constipation) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 18-May-2021, Electrocardiogram: normal (normal) EKG turned out fine.. On 27-May-2021, Electrocardiogram: normal (normal) EKG that turned out ok. On 15-Jun-2021, Electrocardiogram: normal (normal) Heart tests turned out completely normal.. On 23-Jun-2021, Electrocardiogram: normal (normal) Heart tests turned out completely normal..     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Lab test also includes: Stress test performed on 23-Jun-2021, results not available Patient stated that they thought that her symptoms were related to Myocarditis. Patient reported that her side effects have just now abated. Her orthopedic doctor told her that symptoms might have been from the vaccine. Other concomitant medications also include: Vitamin without Iron, 1 tablet every morning.  Clinical outcome: No official signs of Myocarditis.