scleroderma flare up; scleroderma flare up; all the joints in my feet hurt, my hip felt like it was fractured on the right side, on right thumb joint and my left shoulder; my feet are numb like they are numb, cold, can not feel, numb like walking on gravel; my feet are numb like they are numb, cold, can not feel, numb like walking on gravel; sick; tired; I have fever it was 100.7; the booster shot; This is a spontaneous report received from a contactable consumer. The reporter is the patient. A 56- year-old female patient received bnt162b2 (BNT162B2, Pfizer product), intramuscular, administered in arm left, administration date 23Dec2021 13:00 (Lot number: FF8839) at the age of 56 years as dose number unknown (booster), single for COVID-19 immunisation. Relevant medical history included: "esophageal dysmotility" (unspecified if ongoing); "thyroid" (unspecified if ongoing); "scleroderma" (unspecified if ongoing); "scleroderma with raynaud's" (unspecified if ongoing); "pain in hip" (unspecified if ongoing); "pain in feet" (unspecified if ongoing). Concomitant medication(s) included: KLONOPIN; BACLOFEN; ZOLOFT; SEROQUEL; GABAPENTIN; OMEPRAZOLE. She took a lot of medication, also had been taking pain pills (intent treatment) for the pain that she had in her hip and her feet. Vaccination history included: Covid-19 vaccine (Manufacture Unknown), for Covid-19 Immunization. The following information was reported: immunisation (medically significant) with onset 23Dec2021, outcome "unknown", described as "the booster shot"; scleroderma (medically significant), condition aggravated (medically significant), outcome "not recovered" and all described as "scleroderma flare up"; arthralgia (non-serious), outcome "unknown", described as "all the joints in my feet hurt, my hip felt like it was fractured on the right side, on right thumb joint and my left shoulder"; pyrexia (non-serious) with onset 23Dec2021, outcome "unknown", described as "I have fever it was 100.7"; illness (non-serious) with onset 25Dec2021, outcome "unknown", described as "sick"; fatigue (non-serious) with onset 25Dec2021, outcome "unknown", described as "tired"; hypoaesthesia (non-serious), peripheral coldness (non-serious), outcome "not recovered" and all described as "my feet are numb like they are numb, cold, cannot feel, numb like walking on gravel". Event details reported as follow: The patient went through a scleroderma flare up, all the joints in her feet hurt, her hip felt like it was fractured on the right side, on right thumb joint and her left shoulder and she had fever it was 100.7 and she got it on Thursday but Saturday morning she was sick, she was tired, she could not get out of bed, they got a home COVID test, it was negative and she ended up getting prednisone (treatment) for her joint pain and that helped, but her feet are numb like they are numb, cold, cannot feel, numb like walking on gravel, they still flared up. Her doctor called her and (incomplete sentence), prednisone. Her feet are not normal yet, her feet are numb. The patient underwent the following laboratory tests and procedures: body temperature: (23Dec2021) 100.7; SARS-CoV-2 test: (unspecified date) negative. Therapeutic measures were taken as a result of arthralgia.  Follow-up attempts are completed. No further information is expected.