he had the headache for three to four weeks continuously, very severe; Tiredness; Nausea; Vitamin D level has reduced to 13; bilateral leg pain; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the parent.  A 14-year-old male patient received BNT162b2 (BNT162B2), on 21Jan2022 as dose 3 (booster), 0.3 ml single (Lot number: FL3209, Expiration Date: 30Jan2022) at the age of 14 years, in left arm for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: BNT162b2 (2nd dose, Lot Number: EW0217, Expiration Date: 30Sep2021, Route, Anatomical Location: Left arm), administration date: 25Jun2021, when the patient was 14-year-old, for covid-19 Immunization; BNT162b2 (1st dose, Lot Number: EW0186, Expiration Date: 31 Aug 2021, Route, Anatomical Location: Left arm), administration date: 04Jun2021, when the patient was 14-year-old, for covid-19 Immunization.  The following information was reported: NAUSEA (non-serious) with onset 2022, outcome "unknown"; FATIGUE (non-serious) with onset 2022, outcome "unknown", described as "Tiredness"; VITAMIN D DECREASED (non-serious) with onset 2022, outcome "unknown", described as "Vitamin D level has reduced to 13"; PAIN IN EXTREMITY (non-serious) with onset 2022, outcome "unknown", described as "bilateral leg pain"; HEADACHE (non-serious) with onset 2022, outcome "unknown", described as "he had the headache for three to four weeks continuously, very severe". The event "he had the headache for three to four weeks continuously, very severe" required emergency room visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of nausea, vitamin d decreased.  Additional information: Reporter wants to know if it is a concern that after a couple of months he is still suffering. The symptoms continuing even after couple of months, symptoms did not stop. After getting the shot, he had symptoms like someone beating his head, he had the headache for three to four weeks continuously, very severe. Like a band of headaches, like band around, feeling like someone hitting him on the back of his head. Headaches started slowly about a week after getting the booster shot. he is getting healed up, now getting the headache on and off. Tiredness like he ran for like three miles, imagine if sprinting. The headache was persistent and now he is feeling the tiredness and nausea. Vitamin D level has reduced to 13, unknown units. Level check on 30Mar2022. Patient is an athlete, he is healthy, he has been an athlete for four years, he practices every week, very healthy child. Symptoms started after booster shot. Exact dates unknown. general lab work seems to be normal. Treatment for Vitamin D with Vitamin D2 Supplement 50,000 IU. Use before 31Mar2023. In an orange pharmacy bottle from the pharmacy. NDC/Lot/Expiration unknown. Treatment for Nausea with Ondansetron 8mg tablets. Caller has a strip of medication. Expires: 2024. B/N: OD0820028A. Lot/NDC unknown. AE required to visit emergency room on 14Feb2022, for the headache, Head CT Scan which was normal, patient was not admitted, he was in the Emergency Room for a few hour. Prior Vaccinations (within 4 weeks) the patient did not received any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s). Patient went to the Neuro doctor, and ENT specialist, all good to go, all the specialists seems to be good, vision specialist, pediatric all seems to be good, patient is still having the issue. Reporter (patient parent) said his question was about the common symptoms that patient has suffered with that he has had issues for two and a half months after his booster dose on 21st of January. Patient still has headache and nausea and tiredness and going on with pain, which is common, but he would like to know how long it would take to complete and also started having bilateral leg pain a week after receiving the vaccine.