sore throat since/not a common sore throat; swallows; breathe too deep; diagnosed with acid reflux; felt like a baby landed on her chest/ she can taste or feel her throat; tension on her left arm; she can not take a forward breathe when try to breathe; slight headache; arm was sore from the shoulder down; This spontaneous case was reported by a consumer and describes the occurrence of GASTROOESOPHAGEAL REFLUX DISEASE (diagnosed with acid reflux), FEELING ABNORMAL (felt like a baby landed on her chest/ she can taste or feel her throat), MUSCLE TIGHTNESS (tension on her left arm), DYSPNOEA (she can not take a forward breathe when try to breathe) and OROPHARYNGEAL PAIN (sore throat since/not a common sore throat) in a 23-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 017E21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Disorder thyroid (abnormal thyroid and hormones levels which are now normal.) and Hormone level abnormal.    On 28-Aug-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 28-Aug-2021, the patient experienced FEELING ABNORMAL (felt like a baby landed on her chest/ she can taste or feel her throat), MUSCLE TIGHTNESS (tension on her left arm), DYSPNOEA (she can not take a forward breathe when try to breathe), HEADACHE (slight headache) and VACCINATION SITE PAIN (arm was sore from the shoulder down). On 12-Sep-2021, the patient experienced GASTROOESOPHAGEAL REFLUX DISEASE (diagnosed with acid reflux). On 17-Sep-2021, the patient experienced OROPHARYNGEAL PAIN (sore throat since/not a common sore throat), DYSPHAGIA (swallows) and HYPERVENTILATION (breathe too deep). At the time of the report, GASTROOESOPHAGEAL REFLUX DISEASE (diagnosed with acid reflux), FEELING ABNORMAL (felt like a baby landed on her chest/ she can taste or feel her throat), MUSCLE TIGHTNESS (tension on her left arm), DYSPNOEA (she can not take a forward breathe when try to breathe), OROPHARYNGEAL PAIN (sore throat since/not a common sore throat), DYSPHAGIA (swallows), HYPERVENTILATION (breathe too deep), HEADACHE (slight headache) and VACCINATION SITE PAIN (arm was sore from the shoulder down) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       Concomitant product was not provided by the reporter.  patient reported that she experienced  baby landed on her chest, had tension on her left arm, her arm was sore from the shoulder down and she had a slight headache. Patient went to emergency room On 12-Sep-2021 to 13-Sep-2021. she diagnosed with acid reflux. on Friday night, 17Sept2021,she had a sore throat.  Treatment information was not provided.  Company Comment: This case concerns a 23-year-old female subject with no reported relevant medical history, who experienced the unexpected non-serious events of gastrooesophageal reflux disease, muscle tightness, dyspnoea, oropharyngeal pain, dysphagia and hyperventilation. The rechallenge was unknown. The benefit-risk relationship of Moderna COVID-19 Vaccine is not affected by this report. Based on information available and as per medical criteria events were classified as Non-serious.; Sender's Comments: This case concerns a 23-year-old female subject with no reported relevant medical history, who experienced the unexpected non-serious events of gastrooesophageal reflux disease, muscle tightness, dyspnoea, oropharyngeal pain, dysphagia and hyperventilation. The rechallenge was unknown. The benefit-risk relationship of Moderna COVID-19 Vaccine is not affected by this report. Based on information available and as per medical criteria events were classified as Non-serious.