extreme" and "excruciating" pain in the arm; sore arm/The patient's arm isn't swollen but any time you try to move the arm, its painful.; slept basically the whole weekend; sore arm was reported as worsened; still tired; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP and Other HCP) from medical information team.  A 93 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date 28Apr2021 (Lot number: EWO173) at the age of 93 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Diabetes mellitus" (unspecified if ongoing), notes: Verbatim: Diabetic; "Renal failure" (unspecified if ongoing), notes: Verbatim: Kidney failure. Concomitant medication(s) included: CLOPIDOGREL taken for thrombosis. Vaccination history included: Bnt162b2 (first dose, lot number:EW0158, Anatomical site of injection: Right upper arm), administration date: 07Apr2021, for COVID-19 immunization. The following information was reported: LIMB DISCOMFORT (non-serious) with onset 30Apr2021, outcome "not recovered", described as "extreme" and "excruciating" pain in the arm"; PAIN IN EXTREMITY (non-serious) with onset 30Apr2021, outcome "not recovered", described as "sore arm/The patient's arm isn't swollen but any time you try to move the arm, its painful."; SOMNOLENCE (non-serious) with onset 30Apr2021, outcome "not recovered", described as "slept basically the whole weekend"; CONDITION AGGRAVATED (non-serious) with onset 30Apr2021, outcome "unknown", described as "sore arm was reported as worsened"; FATIGUE (non-serious) with onset 2021, outcome "unknown", described as "still tired". Therapeutic measures were taken as a result of limb discomfort, pain in extremity, condition aggravated.  Additional information: It was stated that the caller was calling on behalf of her mother about the Pfizer covid vaccine. The patient had her second shot on Wednesday 28Apr2021. On Friday 30Apr2021 the patient's arm was sore starting that evening and ever since then. The patient slept basically the whole weekend. The patient's arm is in extreme pain, Patient can't lift it or move it. The patient received the shot and gave it 3 weeks out after the first dose. The first dose didn't effect the patient at all. The patient's arm isn't swollen but any time you try to move the arm, its painful. Has anyone else experienced this before. Is this something new. This event happened after the second dose of the vaccine. The caller is still tired. The sore arm is the same arm that the patient received the vaccine in, the right arm. The patient received pain pill and 50 mg tablet of tramadol for pain. Description of Product Complaint: The patient's arm was in extreme pain, patient can't lift it or move it. The patient takes a prescription pain pill and patient was still experiencing this much pain, it was strange. The caller takes half of a 50mg tablet of Tramadol for pain. The reporter does not know the NDC, lot, or expiration date of the medication as the patient was starting a new bottle currently. The reporter doesn't know if the patient got a blood clot or some in her arm? The patient takes Clopidogrel 75mg which was a blood thinner for blood clots. Unknown lot, NDC, and expiration date.  No follow-up attempts are needed. No further information is expected.