What is vasovagal syncope, cause of hiatus for TWICE's Chaeyoung?
TWICE member Chaeyoung / Captured from Chaeyoung's social media
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TWICE member Chaeyoung is taking a break from all activities after being diagnosed with vasovagal syncope — a medical condition that can cause sudden drops in heart rate and blood pressure, leading to unexpected fainting spells. Her agency, JYP Entertainment, said on Nov. 20 that the singer has been undergoing medical consultations and tests, and doctors advised that she now requires a longer recovery period.
“Chaeyoung was recently diagnosed with vasovagal syncope, and after careful examinations, it was concluded that she needs additional rest,” the agency said. “She will temporarily suspend activities to focus on treatment and recovery.” JYP added that Chaeyoung is “deeply disappointed” but is prioritizing her health, asking fans for understanding and support.
Vasovagal syncope, the condition affecting Chaeyoung, is one of the most common causes of sudden fainting. It occurs when the body overreacts to certain triggers, causing blood pressure and heart rate to fall rapidly and momentarily cutting off blood flow to the brain. Most episodes resolve within seconds to a minute and are not life-threatening, but falling during the episode can result in injury.
Common triggers include prolonged standing, hot or poorly ventilated environments, sudden pain or fear, or seeing blood or needles. The condition can happen to anyone but is more common in people with naturally low blood pressure, low body fluid levels or a history of fainting.
Recognizing early warning signs is crucial
Many people experience warning signs before fainting. These may include darkening or narrowing of vision, dizziness, cold sweat, nausea, ringing in the ears or intense fatigue. Quickly sitting or lying down and elevating the legs can prevent a full fainting episode.
Diagnosis typically involves an electrocardiogram to rule out arrhythmia or heart disease, along with a tilt-table test to evaluate autonomic nervous system responses. If fainting occurs repeatedly, happens during exercise, or is accompanied by chest pain or shortness of breath, doctors must examine the possibility of underlying heart conditions.
Hydration, nutrition and preparation help prevent episodes
To reduce symptoms, it is important to stay well-hydrated and increase salt intake to help maintain blood volume. When standing for long periods, crossing the legs or flexing the calf muscles can improve circulation. At the first sign of warning symptoms, sitting or lying down and raising the legs helps restore blood flow to the brain.
People with frequent episodes may require medication. Good prevention practices include regular exercise, adequate sleep and consistent hydration and nutrition. Excessive dieting or dehydration can increase the risk of fainting. Experts also recommend carrying a “syncope action card” listing symptoms, response steps and emergency contacts for companions or bystanders.
This article from Kormedi.com, Korea’s top health care and medical portal, is translated by a generative AI system and edited by The Korea Times.