Dizziness; Near fainting; Couldn't use arm to get off floor; arm was very painful/arm was achy; General body pain; Nauseated; Pain in arm; Swollen lymph node / lymph node under arm where received shot is swollen; Fever; Vomiting; Fatigue; Missed dose; Dehydration; Movement disorder; Vertigo; Brain fog; Vaccination adverse reaction; This spontaneous case was reported by a consumer and describes the occurrence of DEHYDRATION (Dehydration), MOVEMENT DISORDER (Movement disorder), PAIN IN EXTREMITY (Pain in arm), VERTIGO (Vertigo) and FEELING ABNORMAL (Brain fog) in a 41-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 048A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Multiple sclerosis since 11-Jan-2004, Sturge-Weber syndrome since 02-Jun-1980, Asthma since 1981, COVID-19 on 02-Feb-2021 and Abdominal pain since 31-Oct-2020. Concomitant products included ETHINYLESTRADIOL, NORGESTIMATE (TRI-LO-SPRINTEC) for Birth control, PARACETAMOL (TYLENOL) for Fever, VITAMIN B12 NOS and VITAMIN D3 for MS, INTERFERON BETA-1A (REBIF) for Multiple sclerosis, VITAMIN B NOS and VITAMIN D NOS for an unknown indication.   On 12-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 12-Mar-2021, the patient experienced VACCINATION COMPLICATION (Vaccination adverse reaction). On 13-Mar-2021, the patient experienced DEHYDRATION (Dehydration), MOVEMENT DISORDER (Movement disorder), PAIN IN EXTREMITY (Pain in arm), VERTIGO (Vertigo), FEELING ABNORMAL (Brain fog), PRODUCT DOSE OMISSION ISSUE (Missed dose), LYMPHADENOPATHY (Swollen lymph node / lymph node under arm where received shot is swollen), PYREXIA (Fever), VOMITING (Vomiting) and FATIGUE (Fatigue). On an unknown date, the patient experienced DIZZINESS (Dizziness), PAIN (General body pain), PRESYNCOPE (Near fainting), MOBILITY DECREASED (Couldn't use arm to get off floor), PAIN IN EXTREMITY (arm was very painful/arm was achy) and NAUSEA (Nauseated). The patient was treated with ONDANSETRON (ZOFRAN [ONDANSETRON]) for Vomiting, at a dose of 1 dosage form. On 14-Mar-2021, VERTIGO (Vertigo) and VOMITING (Vomiting) had resolved. On 15-Mar-2021, DEHYDRATION (Dehydration) had resolved. At the time of the report, MOVEMENT DISORDER (Movement disorder), FEELING ABNORMAL (Brain fog), DIZZINESS (Dizziness), PAIN (General body pain), PRESYNCOPE (Near fainting), VACCINATION COMPLICATION (Vaccination adverse reaction), MOBILITY DECREASED (Couldn't use arm to get off floor), PAIN IN EXTREMITY (arm was very painful/arm was achy), LYMPHADENOPATHY (Swollen lymph node / lymph node under arm where received shot is swollen), FATIGUE (Fatigue) and NAUSEA (Nauseated) outcome was unknown, PAIN IN EXTREMITY (Pain in arm) and PRODUCT DOSE OMISSION ISSUE (Missed dose) had resolved and PYREXIA (Fever) was resolving.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 11-Feb-2021, Body temperature: unknown (abnormal) unknown. On 11-Feb-2021, SARS-CoV-2 test: positive (Positive) Positive.    The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Treatment information included fluids for dehydration and nausea medicine that did not relief the nausea and stopped taking it. Patient canceled the second appointment and planning on getting Pfizer when we need boosters.   Most recent FOLLOW-UP information incorporated above includes: On 19-Jul-2021: Significant followup received on 19-JUL-2021 and events outcome ,new events, concomitant medications, relevant medical history were updated