myocarditis; Stills disease; My son started with inflammation issues in July; He kept getting chest pains; palpitations; 103 to 105 fevers; His heart,liver, kidneys, muscles and joints were affected; His heart,liver, kidneys, muscles and joints were affected; His heart,liver, kidneys, muscles and joints were affected; His heart,liver, kidneys, muscles and joints were affected; His heart,liver, kidneys, muscles and joints were affected; c-reaction, segmentation, Ferratin rates and other information markers extremely high; c-reaction, segmentation, Ferratin rates and other information markers extremely high; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the parent.  A 16 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 08Jun2021 09:00 (Batch/Lot number: unknown) at the age of 16 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Type 1 Diabetes" (unspecified if ongoing), notes: Type 1 Diabetes; "Celiacs disease" (unspecified if ongoing); "Hashimoto" (unspecified if ongoing). Concomitant medication(s) included: NOVOLOG. Past drug history included: Gluten, reaction(s): "Allergy". Vaccination history included: Bnt162b2 (Dose Number: 1, Location of injection: Arm Left, Vaccine Administration Time: 09:00 AM), administration date: 18May2021, when the patient was 16 years old, for COVID-19 Immunization. The following information was reported: MYOCARDITIS (hospitalization, medically significant) with onset 18Jul2021 12:00, outcome "recovering", described as "myocarditis"; STILL'S DISEASE (hospitalization, medically significant) with onset 18Jul2021 12:00, outcome "recovering", described as "Stills disease"; INFLAMMATION (hospitalization) with onset 18Jul2021 12:00, outcome "recovering", described as "My son started with inflammation issues in July"; CHEST PAIN (hospitalization) with onset 18Jul2021 12:00, outcome "recovering", described as "He kept getting chest pains"; PALPITATIONS (hospitalization) with onset 18Jul2021 12:00, outcome "recovering", described as "palpitations"; PYREXIA (hospitalization) with onset 18Jul2021 12:00, outcome "recovering", described as "103 to 105 fevers"; RENAL DISORDER (hospitalization), CARDIAC DISORDER (hospitalization), LIVER DISORDER (hospitalization), MUSCLE DISORDER (hospitalization), ARTHROPATHY (hospitalization) all with onset 18Jul2021 12:00, outcome "recovering" and all described as "His heart,liver, kidneys, muscles and joints were affected"; C-REACTIVE PROTEIN INCREASED (hospitalization), SERUM FERRITIN INCREASED (hospitalization) all with onset 18Jul2021 12:00, outcome "recovering" and all described as "c-reaction, segmentation, Ferratin rates and other information markers extremely high". The patient was hospitalized for myocarditis, still's disease, inflammation, chest pain, palpitations, pyrexia, renal disorder, cardiac disorder, liver disorder, muscle disorder, arthropathy (start date: 12Oct2021, discharge date: 30Oct2021, hospitalization duration: 18 day(s)); for c-reactive protein increased, serum ferritin increased (start date: 18Oct2021, discharge date: 30Oct2021, hospitalization duration: 12 day(s)). The events "myocarditis", "stills disease", "my son started with inflammation issues in july", "he kept getting chest pains", "palpitations", "103 to 105 fevers", "his heart,liver, kidneys, muscles and joints were affected", "his heart,liver, kidneys, muscles and joints were affected", "his heart,liver, kidneys, muscles and joints were affected", "his heart,liver, kidneys, muscles and joints were affected", "his heart,liver, kidneys, muscles and joints were affected", "c-reaction, segmentation, ferratin rates and other information markers extremely high" and "c-reaction, segmentation, ferratin rates and other information markers extremely high" were evaluated at the physician office visit and emergency room visit. The patient underwent the following laboratory tests and procedures: c-reactive protein: (12Oct2021) extremely high; investigation: (12Oct2021) extremely high; pyrexia: (12Oct2021) 103; (12Oct2021) 105; serum ferritin: (12Oct2021) extremely high. Therapeutic measures were taken as a result of myocarditis, still's disease, inflammation, chest pain, palpitations, pyrexia, renal disorder, cardiac disorder, liver disorder.  Clinical course: It was reported that  my son started with inflammation issues in July. He kept getting chest pains and palpitations. He was ER three times prior to three week stay for myocarditis and a rare inflammatory disease believed to be Stills disease. He was admitted to the hospital in 12Oct with 103 to 105 fevers, c-reaction, segmentation, Ferratin rates and other information markers extremely high. His heart, liver, kidneys, muscles and joints were affected. Prior to vaccination the patient diagnosed with COVID-19, since the vaccination the patient been tested for COVID-19, patient receive any other vaccines within 4 weeks prior to the COVID vaccine was reported as no. Lot unknown reason was reported as Unable to locate or read the details. Treatment included: Magnesium to stop cardiac arrest, beta blockers, blood pressure meds, Anakinra, infusion.  The lot number for bnt162b2 was not provided and will be requested during follow up.