It is totally out of character for her and is really making her tired; shoulder that she got the shot in, her left is really really sore, like a deep tissue soreness even more so than it was when she got the vaccine; This morning, she woke up with her arm hurting. She mentioned that throughout the day it's been getting worse and worse; deep tissue soreness and was just isolated in the upper arm muscle; she has difficulty in moving her arm because it really hurts when she lifts it up to her shoulder/she is having a hard time lifting her left arm up past her shoulder; soreness of the arm/minimal soreness in the left arm; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 48 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 02Apr2021 (Lot number: ER8730) as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. The patient's concomitant medications were not reported. Vaccination history included: Flu vaccine (prior to vaccinations ; Flu Shot NDC, Lot, Expiration Unknown; 2 Years Ago), for Soreness in the Arm; Flu vaccine (prior to vaccinations ; Flu Shot NDC, Lot, Expiration Unknown; 2 Years Ago), for Severe Tiredness. The following information was reported: PAIN IN EXTREMITY (non-serious) with onset 02Apr2021, outcome "recovered" (05Apr2021), described as "soreness of the arm/minimal soreness in the left arm"; CONDITION AGGRAVATED (non-serious) with onset 16Apr2021, outcome "not recovered", described as "This morning, she woke up with her arm hurting. She mentioned that throughout the day it's been getting worse and worse"; MYALGIA (non-serious) with onset 16Apr2021, outcome "not recovered", described as "deep tissue soreness and was just isolated in the upper arm muscle"; VACCINATION SITE JOINT MOVEMENT IMPAIRMENT (non-serious) with onset 16Apr2021, outcome "not recovered", described as "she has difficulty in moving her arm because it really hurts when she lifts it up to her shoulder/she is having a hard time lifting her left arm up past her shoulder"; FATIGUE (non-serious), outcome "unknown", described as "It is totally out of character for her and is really making her tired"; INJECTION SITE PAIN (non-serious) with onset 16Apr2021, outcome "not recovered", described as "shoulder that she got the shot in, her left is really really sore, like a deep tissue soreness even more so than it was when she got the vaccine".  Additional information : It was reported that, states she got her first vaccination 2 weeks ago and she didn't have any side effects, other than minimal soreness in the left arm. States that was two weeks ago today that she received it and nothing has happened and she has not fallen and there have been no incidents. Caller states today the shoulder that she got the shot in, her left is really really sore, like a deep tissue soreness even more so than it was when she got the vaccine. States she is calling to see if this is normal or if this is something she should be concerned about, Clarifies that she minimal soreness had completely gone away at least a week ago, and now this is a new soreness. Caller adds that she is having a hard time lifting her left arm up past her shoulder. Started today. Caller states she does have pre-existing conditions that don't have anything to do with this. Time the Vaccination Was Given: 14:00-14:30 (24 hour clock), Time of Onset (24-hour clock): Shoulder Pain Morning. AE(s) following prior vaccinations: Severe Tiredness and Soreness in the Arm; Flu Shot NDC, Lot, Expiration Unknown; 2 Years Ago Prior Vaccinations (within 4 weeks) is None, Family Medical History Relevant to AE is None, Treatment: None.  No follow-up attempts are possible. No further information is expected.