I have developed neurological type symptoms; stretchy and painful sensation along the back (spinal cord); severe malaise; fatigue; I had herpes simplex type symptoms, but much worse; I had herpes simplex type symptoms, but much worse; thyroid antibody levels increased; continued cold sore outbreaks; This is a spontaneous report received from a non-contactable reporter(s) (Other HCP). The reporter is the patient.  A 33-year-old female patient (not pregnant) received BNT162b2 (BNT162B2), as dose 2, single (Batch/Lot number: unknown), in left arm for covid-19 immunisation. The patient's relevant medical history included: "Autoimmune thyroiditis" (unspecified if ongoing). Concomitant medication(s) included: LEVOTHYROXINE. Vaccination history included: Bnt162b2 (Brand: Pfizer-BioNTech, Dose Number: 1, prev dose lot unknown reason=Unable to locate or read the details,, Location of injection: Arm Left), for Covid-19 Immunization. The following information was reported: HERPES SIMPLEX (non-serious), CONDITION AGGRAVATED (non-serious) all with onset 10Mar2022, outcome "recovering" and all described as "I had herpes simplex type symptoms, but much worse"; NEUROLOGICAL SYMPTOM (non-serious) with onset 10Mar2022, outcome "recovering", described as "I have developed neurological type symptoms"; ORAL HERPES (non-serious) with onset 10Mar2022, outcome "recovering", described as "continued cold sore outbreaks"; FATIGUE (non-serious) with onset 10Mar2022, outcome "recovering"; MALAISE (non-serious) with onset 10Mar2022, outcome "recovering", described as "severe malaise"; BACK PAIN (non-serious) with onset 10Mar2022, outcome "recovering", described as "stretchy and painful sensation along the back (spinal cord)"; ANTI-THYROID ANTIBODY INCREASED (non-serious) with onset 10Mar2022, outcome "recovering", described as "thyroid antibody levels increased". The events "i have developed neurological type symptoms", "stretchy and painful sensation along the back (spinal cord)", "severe malaise", "fatigue", "i had herpes simplex type symptoms, but much worse", "thyroid antibody levels increased" and "continued cold sore outbreaks" required physician office visit. Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of neurological symptom, back pain, malaise, fatigue, herpes simplex, condition aggravated, anti-thyroid antibody increased, oral herpes.  Additional Information: It was reported that, a few days following second Pfizer vaccine, patient have developed neurological type symptoms, such as stretchy and painful sensation along the back (spinal cord), severe malaise, fatigue. Patient had herpes simplex type symptoms, but much worse. The only treatment that helped was about of tx with valacyclovir. Patient keep having frequent outbreaks, a lot lire frequent than prior to the vaccine administration (very few months). In addition to above mentioned Sxs, my thyroid antibody levels increased and patient had to increase the dosage of thyroid medication. Patient continue to have continued cold sore outbreaks and still battling vaccine injury problems. The treatment received with antiviral treatments and increased dose for thyr.meds. No other vaccine received in four week. No Covid prior vaccination. Patient was not aware of known allergies.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.