What Is Ankylosing Spondylitis? All About Lee Dong Gun’s Rare Condition Affecting 1% Of South Koreans

Recently, reports about Korean actor Lee Dong Gun being diagnosed with a rare disease surfaced on the internet.

What Is Ankylosing Spondylitis? All About Lee Dong Gun’s Rare Condition Affecting 1% Of South Koreans
Image Credits: SBS Entertainment YouTube.

Recently, reports about Korean actor Lee Dong Gun being diagnosed with a rare disease surfaced on the internet. It left many fans and well-wishers sad. The news came to light during the latest episode of SBS’s My Little Old Boy, where the actor’s health struggle was discussed. For those who want to know about this condition and its impact, read on!

All You Need To Know About Lee Dong Gun’s Rare Ankylosing Spondylitis Diagnosis Affecting 1% Of South Koreans

During a hospital visit shown on the show, Lee Dong Gun experienced severe redness in his right eye. According to the actor, on milder days, his eye would turn slightly red, and his vision would blur a little. But when symptoms became worse, the redness intensified, and light became painful, which made it hard to see clearly.

At first, this was scary for him, but after a year, he started getting used to the discomfort even though it was challenging.

Furthermore, the doctor examined him and stated that the eye issue was uveitis, an inflammation that can signal a rare condition called ankylosing spondylitis. This disease affects about 1% of South Koreans and causes the spine to slowly stiffen. For many patients, uveitis is the first sign of this illness.

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The doctor also reviewed the actor’s X-rays and stated that the inflammation in his lower spine points to stages 2 to 3 of the disease.

The condition has no known cause or complete cure, which means that the actor will need to deal with it for life. And if it’s not taken care of properly, it could worsen and affect his daily life.

The news shocked fans, who have been sharing messages of encouragement on the internet and are hoping for his strength and recovery. It’s important to note that Lee Dong Gun’s openness about his health has raised awareness about this rare disease.

Sending you best wishes!

You can watch the entire video below!

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First Published: September 29, 2025 12:58 PM

Sneha Ghorai

Loudspeaker personified and a sucker for romance and K-pop. Lives 24/7 on Twitter and writes for fun and funds.

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