Famotidine gave the patient heart burn and indigestion; patient got a burning rash that itches each day; The rash is located all over the body including her left cheek, arms, face, neck, sterrnum, stomach, and back; This spontaneous case was reported by a consumer and describes the occurrence of RASH PRURITIC (patient got a burning rash that itches each day) and RASH (The rash is located all over the body including her left cheek, arms, face, neck, sterrnum, stomach, and back) in a 44-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 034F21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No medical history was reported.     On 18-Dec-2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 28-Dec-2021, the patient experienced RASH PRURITIC (patient got a burning rash that itches each day) (seriousness criterion medically significant) and RASH (The rash is located all over the body including her left cheek, arms, face, neck, sterrnum, stomach, and back) (seriousness criterion medically significant). On an unknown date, the patient experienced DYSPEPSIA (Famotidine gave the patient heart burn and indigestion). The patient was treated with PREDNISONE for Adverse event, at an unspecified dose and frequency; FEXOFENADINE HYDROCHLORIDE (ALLEGRA [FEXOFENADINE HYDROCHLORIDE]) for Adverse event, at an unspecified dose and frequency and FAMOTIDINE for Adverse event, at an unspecified dose and frequency. At the time of the report, RASH PRURITIC (patient got a burning rash that itches each day), RASH (The rash is located all over the body including her left cheek, arms, face, neck, sterrnum, stomach, and back) and DYSPEPSIA (Famotidine gave the patient heart burn and indigestion) outcome was unknown.            It was reported that the patient received her first Moderna Covid-19 vaccine dose on 25-Mar-2021 in her left arm shoulder deltoid muscle lot number 047A21A expiration date is not provided It is not known when the patient received the vaccine. No adverse reactions reported  The patient received her Moderna Covid-19 vaccine booster dose in her left arm shoulder deltoid muscle. 10 days after the booster dose the patient got a burning rash that itches each day. The rash is located all over the body including her left cheek, arms, face, neck, sterrnum, stomach, and back. The rash comes and goes each day and multiple times per day mainly in the patient's upper body.  Patient did go to see her Physician and was prescribed Prednisone, Allegra and Famotidine. Famotidine gave the patient heart burn and indigestion.  Company comment: This is a spontaneous case concerning a 44 year-old, female patient with no reported medical history, who experienced the serious (due to medically important condition) unexpected, events of rash pruritic and rash (reported as Rash all over). The events occurred approximately 10 days after the booster dose of mRNA-1273 vaccine. The outcome of the events was not reported. The patient was prescribed prednisone, fexofenadine hydrochloride and famotidine. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report.   This case was linked to MOD-2022-456625, MOD-2022-457049 (Patient Link).; Sender's Comments: This is a spontaneous case concerning a 44 year-old, female patient with no reported medical history, who experienced the serious (due to medically important condition) unexpected, events of rash pruritic and rash (reported as Rash all over). The events occurred approximately 10 days after the booster dose of mRNA-1273 vaccine. The outcome of the events was not reported. The patient was prescribed prednisone, fexofenadine hydrochloride and famotidine. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report.