debilitating pain/body aches; chills; headache; body aches in the lower back, spine, and shoulders; body aches in the lower back, spine, and shoulders; body aches in the lower back, spine, and shoulders; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 38-year-old female patient (not pregnant) received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 23Sep2023 at 16:30 as dose 5 (booster), single (Lot number: HG4680) at the age of 38 years intramuscular, in right arm for covid-19 immunisation. The patient's relevant medical history included: "asthma" (unspecified if ongoing); "occipital neuralgia" (unspecified if ongoing); "disc degeneration" (unspecified if ongoing). Concomitant medication(s) included: FLU [INFLUENZA VACCINE] taken for immunisation, on 21Sep2023; MELOXICAM; FLEXERIL [CEFIXIME]; RIBOFLAVIN; MAGNESIUM; ELDERBERRY [SAMBUCUS NIGRA]. Past drug history included: Percocet, reaction(s): "Drug allergies: Percocet"; Oxycodone, reaction(s): "Drug allergies: oxycodone". Vaccination history included: bnt162b2 (Dose 1, single; EL3247), administration date: 10Mar2021, when the patient was 35-year-old, for Covid-19 Immunization, reaction(s): "Pain in arm", "Thirst", "Headache", "Fatigue"; bnt162b2 (Dose 2, single; EP-6955), administration date: 31Mar2021, when the patient was 35-year-old, for Covid-19 Immunization, reaction(s): "Chills", "General body pain", "Fever", "Headache", "Unable to eat", "Appetite absent"; bnt162b2 (Dose 3 (booster), single; FH8027), administration date: 20Dec2021, when the patient was 36-year-old, for Covid-19 Immunization, reaction(s): "Sleep disorder", "Migraine", "Light sensitivity to eye", "Tingling skin", "Sensitive skin", "Headache", "Pain in arm", "Nausea", "Vomiting", "Fatigue"; Covid-19 vaccine (Dose 4 (booster), single; Manufacturer unknown), for Covid-19 Immunization. The following information was reported: BACK PAIN (non-serious), SPINAL PAIN (non-serious), ARTHRALGIA (non-serious) all with onset 24Sep2023 at 07:30, outcome "recovered" (24Sep2023 at 17:30) and all described as "body aches in the lower back, spine, and shoulders"; HEADACHE (non-serious) with onset 24Sep2023 at 08:00, outcome "recovered" (24Sep2023 at 21:00); CHILLS (non-serious) with onset 24Sep2023 at 10:30, outcome "recovered" (24Sep2023 at 13:30); PAIN (non-serious) with onset 24Sep2023 at 12:00, outcome "recovered" (24Sep2023 at 21:00), described as "debilitating pain/body aches ". Therapeutic measures were not taken as a result of back pain, spinal pain, arthralgia, headache, pain, chills. Additional information (as reported): 13 hours after injection (7:30a) started feeling body aches in the lower back, spine, and shoulders. Body aches lasted approximately 10 hours and ended around 5:30p. 13.5 hours after injection (8:00a) started experiencing mild headache in the occipital region. At 17.5 hours (12:00p) headache escalated to significant, debilitating pain which lasted for approximately 9 hours, ending at approximately 9p for a total headache duration of 11 hours. 16 hours after injection (10:30a) started experiencing chills which lasted approximately 3 hours and ended around 1:30p.