Bad headaches; She complained of visual disturbance; She also said that she noticed she was thinking differently; complex migraine; This is a spontaneous report from a contactable consumer (patient). A 13-years-old female non-pregnant patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EW0186), dose 2 via an unspecified route of administration, administered in Arm Left on 06Jun2021 at 10:15 (at the age of 13-years-old) as a DOSE 2, SINGLE for covid-19 immunisation. The patient medical history was none. The patient's concomitant medications were not reported. The patient previously received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EW0185), dose 1 via an unspecified route of administration, administered in Arm Left on 16May2021 at 10:15 AM (at the age of 13-years-old) as a DOSE 1, SINGLE for covid-19 immunisation. No events reported after first dose. Prior to vaccination, the patient was not diagnosed with COVID-19. Since the vaccination, the patient had not been tested for COVID-19. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. On 08Jun2021 at 15:30 the patient experienced bad headaches, she complained of visual disturbance, she also said that she noticed she was thinking differently and complex migraine. Reporter said that, my daughter got a 2nd dose of the Pfizer vaccine on 06Jun2021 and began having bad headaches that night that continued through Tuesday. On Tuesday she complained of visual disturbance. when she looked at my face she couldn't see the right side in entirety, and when she looked at her phone she couldn't see the digits on the right side of the phone. She also said that she noticed she was thinking differently: she couldn't remember how to spell the simple work "because" for example and was processing really slowly when reading very different than the norm. When I called her pediatrician to ask about this he suggested we go to the ER and not take any chances. She was immediately given catscan, bloodwork, EKG and extensive testing with MRI, MRA, MRV. All tests came back normal, and we were told to follow up with neurologist and ophthalmologist. The ER doc & neurologist we saw in the ER suggested it could have been a complex migraine. But she never complained of headaches before. Events resulted in the Emergency room/department or urgent care. Treatment was received for the events. Hospitalization was not required. The patient underwent lab tests and procedures which included angiogram which was normal on Jun2021 MRA, blood test that was normal on Jun2021, computerised tomogram that was normal on Jun2021, electrocardiogram that was normal on Jun2021, magnetic resonance imaging that was normal on Jun2021, sars-cov-2 test that was negative on 08Jun2021 and venogram which was normal on Jun2021. Outcome of all the events were recovered in 2021. Results of tests and procedures for investigation of the patient were negative for blood test on 08Jun2021. Relevant medical history and concurrent conditions were none. Device Date was reported as 09Jun2021. Case was reported as non-serious.  Follow-up attempts are completed. No further information is expected.