weird aches and pain; Aching in the back of the upper arm; Constant stiffness and weakness in the hand and palm; Constant stiffness and weakness in the hand and palm; Index and middle finger feel stiff, swollen, and itchy several times a day; skin of fingers feel tight and itch all up and down/swelling; Index and middle finger feel stiff, swollen, and itchy several times a day; skin of fingers feel tight and itch all up and down/itching; having problems using her left hand; when she clenches her hand, her palm hurts; This is a spontaneous report from a contactable consumer or other non health care professional (Patient). A 63-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: solution for injection, Lot Number: ER8732), via an unspecified route of administration, administered in Arm Left on 25Mar2021 (age at vaccination was 63 years), as dose 1, single for covid-19 immunization. Medical history included ongoing obesity stated she had been obese her whole life, since she was 8 years old. The patient's concomitant medications were not reported. The patient previously took penicillin and compazine [prochlorperazine maleate] and experienced drug allergy. On 27Mar2021, the patient experienced Aching in the back of the upper arm, Constant stiffness and weakness in the hand and palm, Asthenia, Index and middle finger feel stiff, swollen, and itchy several times a day; skin of fingers feel tight and itch all up and down/swelling, Index and middle finger feel stiff, swollen, and itchy several times a day; skin of fingers feel tight and itch all up and down/itching, had problems using her left hand; when she clenches her hand, her palm hurts and on unspecified date patient experienced weird aches and pain. Caller stated she received the first Pfizer covid19 vaccine on Thursday, 25Mar2021. On Saturday, she started to experience aching and weakness in the left arm and hand. Once or twice a day, she experienced aching in the back of her upper arm. She clarified she had the injection kind of near her shoulder and the aching is underneath. The palm of her hand was stiff and sore, and her index finger and middle finger are stiff and sore and weak. Two or three times a day, she got this itching in her fingers and she kind of feels like it is swollen. She was having problems using her left hand, it was on the left side. She clarified further she had constant stiffness and weakness in her hand and palm, middle finger and index finger. The palm of her hand feels weak, achy, arthritic. It was like she could not carry something. When she clenches her hand, her palm hurts. She also stated that 3-4 times a day her fingers swell up and itch, not constantly, but it was like she had to sit there and rub them on something because they itch and felt swollen. The aching in the back of her upper arm was still ongoing, she states it happened yesterday, it had so far happened today. She clarified further the aching happened Saturday once, Sunday a couple of times, and yesterday a couple of times. The constant stiffness and weakness in her hand and palm was persisting and still there now. It had not gone away but it feels like it gets a little better as the day goes on. Her index and middle finger are stiff, swollen, and itching several times a day. She confirms 3-4 times a day her fingers swell up and itch. She clarified her fingers did not get really big or anything, but the skin feels tight and her fingers itch all up and down the fingers. She confirmed all of these symptoms are with her left hand and left arm. She took Aspirin one day, and Tylenol yesterday as treatment drug. Outcome of the event aching in the back of the upper arm was recovering. Outcome of the event pain was unknown. For all rest of the events outcome was not recovered.   No follow-up attempts are needed. No further information is expected.