Iron deficiency anemia; hurts to walk; headaches; chills; chest pain; throat pain; lip pain; trouble breathing; severe inflammation throughout the body; back pain; neck pain; I have autoimmune disorders and those levels went crazy; Condition aggravated; This spontaneous case was reported by a consumer and describes the occurrence of CHEST PAIN (chest pain), OROPHARYNGEAL PAIN (throat pain), LIP PAIN (lip pain), DYSPNOEA (trouble breathing), INFLAMMATION (severe inflammation throughout the body), BACK PAIN (back pain), NECK PAIN (neck pain), AUTOIMMUNE DISORDER (I have autoimmune disorders and those levels went crazy), CONDITION AGGRAVATED (Condition aggravated), IRON DEFICIENCY ANAEMIA (Iron deficiency anemia), PAIN IN EXTREMITY (hurts to walk), HEADACHE (headaches) and CHILLS (chills) in a 48-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 022C21A) for COVID-19 vaccination.     No medical history was reported.  Concurrent medical conditions included Anemia iron deficiency. Concomitant products included METHYLPREDNISOLONE ACETATE (MEDROL [METHYLPREDNISOLONE ACETATE]) for an unknown indication.    On 21-May-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 21-May-2021, the patient experienced CHEST PAIN (chest pain) (seriousness criterion hospitalization), OROPHARYNGEAL PAIN (throat pain) (seriousness criterion hospitalization), LIP PAIN (lip pain) (seriousness criterion hospitalization), DYSPNOEA (trouble breathing) (seriousness criterion hospitalization), INFLAMMATION (severe inflammation throughout the body) (seriousness criterion hospitalization), BACK PAIN (back pain) (seriousness criterion hospitalization), NECK PAIN (neck pain) (seriousness criterion hospitalization), AUTOIMMUNE DISORDER (I have autoimmune disorders and those levels went crazy) (seriousness criteria hospitalization and medically significant), CONDITION AGGRAVATED (Condition aggravated) (seriousness criterion hospitalization), PAIN IN EXTREMITY (hurts to walk) (seriousness criterion hospitalization), HEADACHE (headaches) (seriousness criterion hospitalization) and CHILLS (chills) (seriousness criterion hospitalization). On an unknown date, the patient experienced IRON DEFICIENCY ANAEMIA (Iron deficiency anemia) (seriousness criterion hospitalization). The patient was hospitalized from 21-May-2021 to 24-May-2021 due to AUTOIMMUNE DISORDER, BACK PAIN, CHEST PAIN, CHILLS, CONDITION AGGRAVATED, DYSPNOEA, HEADACHE, INFLAMMATION, IRON DEFICIENCY ANAEMIA, LIP PAIN, NECK PAIN, OROPHARYNGEAL PAIN and PAIN IN EXTREMITY. The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) for Inflammation and Pain, at an unspecified dose and frequency and IRON for Iron deficiency anemia, at an unspecified dose and frequency. At the time of the report, CHEST PAIN (chest pain), OROPHARYNGEAL PAIN (throat pain), LIP PAIN (lip pain), DYSPNOEA (trouble breathing), INFLAMMATION (severe inflammation throughout the body), BACK PAIN (back pain), NECK PAIN (neck pain), AUTOIMMUNE DISORDER (I have autoimmune disorders and those levels went crazy), CONDITION AGGRAVATED (Condition aggravated), IRON DEFICIENCY ANAEMIA (Iron deficiency anemia), PAIN IN EXTREMITY (hurts to walk), HEADACHE (headaches) and CHILLS (chills) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Haemoglobin: 8 (Low) Hemoglobin decreased. On an unknown date, Transferrin saturation: 4 (Low) Low iron saturation.     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.   Patient received her first dose in left non dominant upper arm. She was put on heart monitor while on hospital. Healthcare professionals had difficulty in keeping her Hemoglobin elevated. Patient went to kidney doctor who stated that it might be a side effect from getting the Moderna Covid-19 vaccine.  Based on the current available information and temporal association between the use of the product and the start date of the event, a causal relationship cannot be excluded.  Further information has been requested.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the event, a causal relationship cannot be excluded.  Further information has been requested   *