she noticed a "dime-sized" knot sitting on her shoulder blade under her earlobe/this knot is movable and is going up her neck on her left side; she noticed a "dime-sized" knot sitting on her shoulder blade under her earlobe/this knot is movable and is going up her neck on her left side; arm was sore; small sore knot in her armpit; This is a spontaneous report from a contactable consumer (patient). A 58-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EP6955, Expiry Date: Unknown), dose 1 via an unspecified route of administration, administered in Arm Left on 27Mar2021 at 12:30 (at the age of 58-years-old) as a DOSE 1, SINGLE for covid-19 immunisation (to prevent Covid). Medical history included ongoing arthritis; arthritis in her legs from an unknown date and was ongoing. The patient's concomitant medications were not reported. History of all previous immunization with the Pfizer vaccine considered as suspect (or patient age at first and subsequent immunizations if dates of birth or immunizations are not available) were none. Additional Administered Vaccines orall vaccines administered on same date with the Pfizer vaccine considered as suspect was none. On 28Mar2021, the patient experienced small sore knot in her armpit,and arm was sore. she noticed a "dime-sized" knot sitting on her shoulder blade under her earlobe/this knot is movable and is going up her neck on her left side on 30Mar2021. Patient stated that, she received her first dose of the Pfizer BioNTech COVID-19 vaccine on Saturday around noon and reports on Sunday she notices she had a small sore knot in her armpit. She stated last night (date unspecified) she noticed a "dime-sized" knot sitting on her shoulder blade under her earlobe and states that this morning this knot is movable and is going up her neck on her left side. She wanted to know if this was a side effect of the vaccine. She was concerned with what she should do about it. knot on her shoulder blade closer to the base of her neck was reported as worsened. She reported her, car accident in 2009. She had her first Covid 19 vaccine on 27Mar2021 at around 12: 30PM. On Sunday, 28Mar2021 her arm was sore. That evening she noticed a small knot in her armpit that was sore.  She was old school, so she soaked a warm towel in alcohol and the knot in her armpit got better. Last night, 30Mar2021, she noticed another knot on her shoulder blade closer to the base of her neck. It's dime or penny sized. She used a hot towel and alcohol on that knot and this morning the knot was moving like right up under her earlobe on the left side. She needed to know if this is dangerous. She didn't want this knot to go up to her brain. She was skeptical and cautious but not really scared. Is this knot something common that's being reported. She reported she noticed her arm soreness on Sunday, 28Mar2021. Her arm was better by 30Mar2021 because she could lift her arm. Last night around 11:00PM she noticed the knot near her neck and shoulder blade. She reported it's a movable knot. The knot was on her shoulder blade and the knot is moving up her neck towards her ear lobe. She thought it's getting worse because it's moving.  She took a Walmart brand low dose aspirin. The dose is 81mg, it's a chewable aspirin. She took 240mg. She was told to take Tylenol after the Covid 19 vaccine if there was soreness. She was also asking if she needs to see a doctor for this knot. Patient was asking "Should I be concerned about these knots?" Patient reports that she received her first vaccine dose on March 27th to her left arm, the next day she reported noticing a "knot on the left side of my neck around my shoulder blade". Patient reported that since then she has received her second vaccine dose yesterday, April 18th to her right arm. Patient reported that now she was having another knot to the right side of her neck. Patient reported that she spoke again with safety to file a report, Patient was asking, "Should I be concerned about these knots?" Event did not require a visit to, Emergency Room or Physician Office. Prior Vaccinations (within 4 weeks) and event following prior vaccinations were none. Family Medical History Relevant to event was unspecified. Relevant Tests done were none. Outcome of the small sore knot in her armpit was recovering, she noticed a "dime-sized" knot sitting on her shoulder blade under her earlobe/this knot is movable and is going up her neck on her left side was not recovered and arm was sore was recovered (after 2 days) on 30Mar2021.  No follow-up attempts are possible. No further information is expected.