Shoulder pain; stiff neck and back; Headache; Doctor told her it could be arthritis or something; stiff neck and back; This is a spontaneous report from Pfizer-sponsored program COVAX US SUPPORT. A contactable consumer or other non hcp a retired senior citizen (patient) reported for herself.  A 73-years-old female patient received bnt162b2 (BNT162B2), dose 2 via an unspecified route of administration, administered in Arm Right on 03Mar2021 (Batch/Lot number was not reported) as DOSE 2, SINGLE for covid-19 immunisation. No Additional Vaccines Administered on Same Date Medical history included ongoing thyroiditis, Has thyroid in neck. Does not take medication for it. Doctor said it is under control, diabetes mellitus diagnosed in 2002 or 2003, blood cholesterol. As Historical vaccine the patient received BNT162B2 (Batch/Lot Number, Expiry Date and NDC number), dose 1 via an unspecified route of administration on 12Feb2021 as dose 1, single for covid-19 immunisation. The were no Prior Vaccinations Within 4 Weeks, no adverse events following Prior Vaccinations and no Family Medical History. Concomitant medication(s) included metformin (METFORMIN) taken for diabetes mellitus from 2002, insulin (INSULIN) taken for diabetes mellitus from 2010; atorvastatin (ATORVASTATIN) taken for blood cholesterol; losartan (LOSARTAN) unsure of what she takes the Losartan for, and acetylsalicylic acid (ASPIRINE) takes because doctor told her to take it, maybe because of diabetes.   On 07Mar2021 the patient experienced shoulder pain, stiff neck and back, headache, doctor told her it could be arthritis or something. The patient was wondering how long do the reactions last, that you get from taking the vaccine?. The patient was Initially stating that the symptoms did not occur right away but 7 days later. The patient had her second dose of the covid-19 vaccine on 03Mar2021 and misplaced her card and around 07Mar2021 started feeling symptoms. Couldn't move neck because it was stiff and back was stiff. Couldn't move shoulder, neck or arm because they were really stiff. Took a couple of Tylenol and applied a heat pad. The side effects kind of stayed with her a few days about 3 or 4 days and went away. Started in the right shoulder and then went to the left shoulder. The patient got her shot on the right shoulder. The patient had to put heat pad on overnight before bed. This was about the first morning that she got up and it didn't feel so bad. Little headache right above the temples like a ping. Stays a few minutes and then goes away.  First day wasn't felt as bad, yesterday didn't feel as much either. Explained it as an instant ping, like it hurts. Only lasts a couple of minutes, then goes away, not had it every day since 07Mar2021. For shoulder pain, has been using heat pad. Spoke with doctor who said it helps completely. Glad she used the heating pad. Doctor told her it could be arthritis or something but said it could come from that as well. States that she was told that if it continued to bother her to let her know. Caller went to her HCP last week. Puts the heat pad directly on the shoulder wherever there is pain. Tylenol arthritis. Has herniated disc and sciatic nerves. Can't take ibuprofen because she is diabetic. Doctor told her to take Tylenol.  Tylenol arthritis has helped a lot. Yesterday, didn't feel much pain. Didn't feel much when she got up this morning. Hoping it eases away. The Adverse Events required visit to Physician's Office. The patient wants to know if she can possibly have a wisdom tooth removed tomorrow. No lab Tests, but had bloodwork sometime in March, trying to figure out how her sugar was doing. The outcome of the events shoulder pain, stiff neck and back and headache was recovered. The outcome of the event arthritis was recovering.