Jason Day vertigo explained as he manages recurring balance episodes

Jason Day was diagnosed with vertigo in 2015 and has experienced on-and-off recurrences that have affected his play; he has linked some flare-ups to stress and has pursued testing and lifestyle changes to manage symptoms.

Jason Day has faced recurring vertigo and back issues that have interrupted parts of his PGA Tour career. He was diagnosed with vertigo in 2015 and had a prominent episode at the 2015 U.S. Open when he collapsed on his final hole. Day returned to high-level competition, including a tied second at the 2023 Open Championship and a top-10 finish at the 2025 Masters, while continuing to manage symptoms. He has said he links some episodes to stress and has made dietary and routine changes after testing in 2023. Reported details: - Day was diagnosed with vertigo in 2015 and has reported intermittent recurrences during his career. - A 2015 collapse at the U.S. Open was later attributed to vertigo; he continued to compete and won the PGA Championship two months later. - Vertigo symptoms reported by medical sources include dizziness, a spinning sensation, nausea, ringing in the ears and loss of balance, though individuals experience these differently (source: Cleveland Clinic). - The Cleveland Clinic notes many possible causes for vertigo, such as migraine, stroke, heart or metabolic issues, head injury and other conditions, and symptoms can begin without a clear reason. - There is no single cure for vertigo; treatments reported by medical sources include symptom-focused medication and repositioning techniques for the inner ear, and Day reported testing and lifestyle changes to help manage his episodes. Summary: Day's vertigo has intermittently affected his play but has not ended his competitiveness, as shown by recent high finishes at major events. He has pursued testing and made lifestyle adjustments while continuing to compete. Undetermined at this time.