Diarrhea; Middle finger hurt so bad I thought I broke it/ Left leg was painful; Sore throat; Back also had pain; His shoulders has pain; This spontaneous case was reported by a consumer and describes the occurrence of DIARRHOEA (Diarrhea), PAIN IN EXTREMITY (Middle finger hurt so bad I thought I broke it/ Left leg was painful), OROPHARYNGEAL PAIN (Sore throat), BACK PAIN (Back also had pain) and ARTHRALGIA (His shoulders has pain) in an 81-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 066F21A, 030M20A and 013120A) for COVID-19 vaccination.     No Medical History information was reported.   On 06-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 16-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 10-Nov-2021, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 11-Nov-2021, the patient experienced DIARRHOEA (Diarrhea), PAIN IN EXTREMITY (Middle finger hurt so bad I thought I broke it/ Left leg was painful), OROPHARYNGEAL PAIN (Sore throat), BACK PAIN (Back also had pain) and ARTHRALGIA (His shoulders has pain). At the time of the report, DIARRHOEA (Diarrhea), PAIN IN EXTREMITY (Middle finger hurt so bad I thought I broke it/ Left leg was painful), OROPHARYNGEAL PAIN (Sore throat), BACK PAIN (Back also had pain) and ARTHRALGIA (His shoulders has pain) was resolving.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter considered DIARRHOEA (Diarrhea), PAIN IN EXTREMITY (Middle finger hurt so bad I thought I broke it/ Left leg was painful), OROPHARYNGEAL PAIN (Sore throat), BACK PAIN (Back also had pain) and ARTHRALGIA (His shoulders has pain) to be probably related.    Concomitant medications were not provided. Treatment information was not provided.  On 11-Nov-2021, the patient received  booster shot around 1 o'clock and had no problems until about 2 o'clock this morning. Patient had diarrhea and middle finger hurt so bad on the right side, felt like it was broken.   On 12-Nov-2021, the patient was feeling better now. Patient's left leg was painful, shoulders and back also had pain, had a sore throat. Patient states it was Moderna shot that did it. The patient states doctor thinks patient is healthy - even healthier than the doctors themselves.  This case concerns an 81-year-old male patient with no relevant medical history, who experienced the unexpected events of Diarrhea, Pain in Extremity, Oropharnygeal Pain, Back Pain and Expected event of Arthralgia. The event occurred 1 day after receiving the third dose of mRNA-1273 Vaccine. The rechallenge was not applicable since only information about the third dose was disclosed. The event Arthralgia is consistent with the current understanding of the mechanism of action of the vaccine. The benefit-risk relationship of mRNA-1273 Vaccine is not affected by this report.   This case was linked to MOD-2021-385877 (Patient Link).; Sender's Comments: This case concerns an 81-year-old male patient with no relevant medical history, who experienced the unexpected events of Diarrhea, Pain in Extremity, Oropharnygeal Pain, Back Pain and Expected event of Arthralgia. The event occurred 1 day after receiving the third dose of mRNA-1273 Vaccine. The rechallenge was not applicable since only information about the third dose was disclosed. The event Arthralgia is consistent with the current understanding of the mechanism of action of the vaccine. The benefit-risk relationship of mRNA-1273 Vaccine is not affected by this report.