"weird symptoms" on the left side of her body; From her neck she has swollen lymph nodes as well in her arm pits the lymph nodes are swollen; uncomfortable; her arm was super heavy almost like lid and was very painful/sensation went all the way down to her foot; her arm was super heavy almost like lid and was very painful/arm soreness and so forth/sensation went all the way down to her foot; Pain her neck; her arm, lymph nodes and armpits were swollen; leg weakness/Left knee weakness; Her arm, lymph nodes and armpits were swollen; This is a spontaneous report received from a contactable reporter(s) (Other HCP) from medical information team. The reporter is the patient.  A 58 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 23Jul2021 12:00 (Lot number: FA6780) at the age of 58 years as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. The following information was reported: FEELING ABNORMAL (non-serious) with onset 23Jul2021, outcome "not recovered", described as ""weird symptoms" on the left side of her body"; LYMPHADENOPATHY (non-serious) with onset 23Jul2021, outcome "not recovered", described as "From her neck she has swollen lymph nodes as well in her arm pits the lymph nodes are swollen"; DISCOMFORT (non-serious) with onset 23Jul2021, outcome "not recovered", described as "uncomfortable"; LIMB DISCOMFORT (non-serious) with onset 23Jul2021, outcome "not recovered", described as "her arm was super heavy almost like lid and was very painful/sensation went all the way down to her foot"; PAIN IN EXTREMITY (non-serious) with onset 23Jul2021, outcome "not recovered", described as "her arm was super heavy almost like lid and was very painful/arm soreness and so forth/sensation went all the way down to her foot"; NECK PAIN (non-serious) with onset 23Jul2021, outcome "not recovered", described as "Pain her neck"; PERIPHERAL SWELLING (non-serious) with onset 23Jul2021, outcome "not recovered", described as "her arm, lymph nodes and armpits were swollen"; MUSCULAR WEAKNESS (non-serious) with onset 23Jul2021, outcome "not recovered", described as "leg weakness/Left knee weakness"; SWELLING (non-serious) with onset 23Jul2021, outcome "not recovered", described as "Her arm, lymph nodes and armpits were swollen". The events ""weird symptoms" on the left side of her body", "from her neck she has swollen lymph nodes as well in her arm pits the lymph nodes are swollen", "uncomfortable", "her arm was super heavy almost like lid and was very painful/sensation went all the way down to her foot", "her arm was super heavy almost like lid and was very painful/arm soreness and so forth/sensation went all the way down to her foot", "pain her neck", "her arm, lymph nodes and armpits were swollen" and "leg weakness/left knee weakness" were evaluated at the physician office visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of pain in extremity. Additional information: Weird side effects on her entire left side on the first day, 23Jul2021, time unknown. For the first 24 hours she ignored it because with any vaccine or any injection you are always going to experience maybe arm soreness and so forth; but she took a pain reliever. By day 3 it was getting worse not better, not improving so by the 3rd day she knew it wasn't a normal side effect; just because she had given a million and 1 vaccines herself and her whole left side, it was weird. Her entire left side from her neck, shoulder, entire left arm radiated all the way down to her foot. It started out as weird almost like she could feel the medication circulating through her body on the left side; from her neck, left shoulder, all the way, her whole entire left arm was heavy. When she said heavy it was like if someone is bending over to pick something up off the floor and his arm feels like lead. All of the lymph nodes in her armpit were swollen, they became swollen. That's when she started freaking out and called her doctor. Armpit, all of the lymph nodes in her armpit going into the breast became swollen inside the armpit; right in the middle pit area; it was more of like a huge knot, it really was enlarged. She really could not fold her arm; she had to extend her arm because it was so swollen within her armpit. Radiating all the way down on her left side. She started experiencing leg weakness; her knee, her left knee had started, it was almost like the lymph node in her left knee was just weird; she could feel it, it went all the way down her left thigh to her foot. Left knee and leg everything was experiencing weakness in the left leg. She told her doctor it was as though her leg was giving out. She did not have any comorbidities, no health problems, she had always maintained her health, her body had always been totally healthy. Event was ongoing, outcome unknown. She went to see her doctor and he tried to calm her. She was due for her mammogram, he said no they are not going to do the mammogram right now. She asked him why not, because the place she goes to are very diligent, they give you a reminder when it's time. Seriousness criteria unknown. Event did not result in hospitalization, but the medication she could feel it in her chest; now she was mad with herself because she should not have put it in her left arm; because as far as she was concerned, still with the sensation being in her chest it was too close to her heart. She has never had any type of issue. She should have had them put the injection in her right arm. The patient received vaccine at pharmacy. The patient did not have history of previous immunization with the Pfizer vaccine and no additional vaccines administered on same date. Patient did not have prior Vaccinations (within 4 weeks). The patient did not have relevant family medical history relevant to AE.   No follow-up attempts are possible. No further information is expected.