There are people that report side effects after the Moderna vaccine.; chronic joint pain; she is on a support group for spontaneous chronic urticaria, is having spontaneous chronic hives, all day long scratching; chronic muscle pain; back pain; chronic fatigue; This spontaneous case was reported by a consumer and describes the occurrence of URTICARIA CHRONIC (she is on a support group for spontaneous chronic urticaria, is having spontaneous chronic hives, all day long scratching), VACCINATION COMPLICATION (There are people that report side effects after the Moderna vaccine.), BACK PAIN (back pain), FATIGUE (chronic fatigue) and ARTHRALGIA (chronic joint pain) in a 54-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 939904, 010M20A and 012L20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Chronic fatigue syndrome (With 1st & Second Dose all symptoms worsened) and Epstein Barr virus positive mucocutaneous ulcer. Concomitant products included OMEGA-3 [OMEGA-3 NOS] and VITAMIN D3 for an unknown indication.   On 13-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 11-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 30-Oct-2021, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 30-Oct-2021, the patient experienced BACK PAIN (back pain), FATIGUE (chronic fatigue) and MYALGIA (chronic muscle pain). On 23-Nov-2021, the patient experienced URTICARIA CHRONIC (she is on a support group for spontaneous chronic urticaria, is having spontaneous chronic hives, all day long scratching). On an unknown date, the patient experienced VACCINATION COMPLICATION (There are people that report side effects after the Moderna vaccine.) and ARTHRALGIA (chronic joint pain). The patient was treated with PREDNISONE on 26-Nov-2021 for Hives, at a dose of 1 dosage form; DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) on 23-Nov-2021 for Hives, at a dose of 1 dosage form; CETIRIZINE HYDROCHLORIDE (ZYRTEC [CETIRIZINE HYDROCHLORIDE]) for Adverse event, at a dose of 1 dosage form; PEPSIN for Adverse event, at a dose of 1 dosage form; CELECOXIB (CELEBREX) on 04-Nov-2021 for Adverse event, at a dose of 1 dosage form and TIZANIDINE on 03-Nov-2021 for Adverse event, at a dose of 1 dosage form. On 23-Nov-2021, BACK PAIN (back pain) had resolved. At the time of the report, URTICARIA CHRONIC (she is on a support group for spontaneous chronic urticaria, is having spontaneous chronic hives, all day long scratching) had not resolved, VACCINATION COMPLICATION (There are people that report side effects after the Moderna vaccine.) outcome was unknown and FATIGUE (chronic fatigue), ARTHRALGIA (chronic joint pain) and MYALGIA (chronic muscle pain) was resolving.            Took 50mg of benadryl 11/23/ 11/24 and 100 mg of Benadryl 11/25. 1/26 picked up the Prednisone Taper and started the Predinsone with Zyrtec and 25g of Benadryl in every evening. On Monday (06-DEC-2021): Allergy appointment. Patient do not take Omega-3 and Vitamin D-3 currently.   Most recent FOLLOW-UP information incorporated above includes: On 01-Dec-2021: Added the patient demographics, concomitant and treatment medications. Updated the outcome of the events (muscle pain, fatigue and joint pain) from unknown to recovering. Updated the outcome of the event (Urticaria chronic) from unknown to not recovered.