After retiring from show business in 2001, former actress Shim Eun Ha reemerged into the spotlight last June when she was revealed to have been rushed to the hospital after a drug overdose.

The actress's husband, Ji Sang Wook -- a lawmaker of the minor opposition party, Bareun Party, clarified in a press release that his wife had been admitted to the hospital after overdosing on prescribed medicine for post-traumatic stress disorder. He subsequently withdrew his candidacy for the Bareun Party's leadership, citing "family health" concerns.

Shim Eun Ha, a top actress in South Korea during the nineties, had been suffering from PTSD since being involved in a car accident that nearly took her life 30 years ago, her husband also revealed.

Benzodiazepine, the medicine Shim Eun Ha was prescribed, turned out to be the same medicine that landed Big Bang rapper T.O.P in the hospital. Amid his marijuana scandal, T.O.P was admitted into an intensive care unit at a hospital after taking too much of his anti-anxiety medicine.

T.O.P had been dealing with depression and anxiety for years -- first revealed in 2008. He even captured his experiences in Big Bang's hit song, "Loser," which he co-wrote with G-Dragon.

Kim Gu Ra said he was experiencing insomnia and tinnitus -- a sensation of ringing or buzzing in the ears, even when the sound actually is nonexistent. He visited a doctor and learned that he had anxiety disorder.

Kim Gu Ra's panic disorder reportedly took a turn for the worst when he received a phone call, alerting him that the court was seizing his property of residence due to his then wife's debt of over 1.7 billion KRW ($1.5 million). The broadcaster had belatedly learned that his wife had stood surety for her family's debt, and had tried to manage the situation without her husband's knowledge by borrowing more from others, including loan sharks.

Kim Gu Ra was admitted to the hospital because of his severe panic attacks. The broadcaster returned to television after a short break of 11 days.

Kim Gu Ra was actually the one that advised Lee Sang Min to visit a doctor for anxiety. While filming a program together, Kim Gu Ra pointed out that Lee Sang Min kept letting out big sighs.

Lee Sang Min has spoken publicly about living with anxiety, even showing the boxes of pills he carries with him every day. On the show "My Ugly Duckling," Lee Sang Min came an intimate look at his treatment, allowing the camera to follow his visit to the doctor. Hearing that all the meds he was taking could lead to an earlier onset of Alzheimer's disease, Lee Sang Min -- who has been on medication for over three years now -- shared his concerns that he was becoming more forgetful. Lee revealed that one time, he even used face cleanser to brush his teeth.

"It's a disease that isn't easy to treat," Lee admitted on the show "Rumor Has It." He also explained that many celebs appear to be affected by the illness because of the instability of their careers.

Hong Seok Chun, an openly gay actor in South Korea, revealed that he battled anxiety and depression for three years, after coming out in 2000. The actor revealed that he currently suffers from insomnia because to this day, he still sees criticisms flood in after he does an interview or appears on air.

Speaking about his ordeals, he said, "You can't open up about your concerns, especially to your family... So you keep things to yourself and let the disease grow."

The source of laughter on several hit Korean reality programs, Jung Hyung Don shocked everyone when he announced his sudden hiatus in 2015 due to his severe anxiety disorder.

Jung Hyung Don's anxiety reportedly manifested in physical symptoms, including having trouble breathing and fainting. Lee Sang Min recalled that during filming for a television program, he saw Jung's face go completely white because of his anxiety.

As one reporter explained on the show "Rumor Has It' last month, Jung's anxiety reportedly originated from worries about his career. Jung's journey to success had been long, and when he finally achieved fame "by luck," he felt overwhelmed and feared that he'd suddenly lose it all.

Jung revealed that it got so bad that even when walking on the streets, he'd become paranoid that "someone might suddenly stab him for no reason."

Jung decided to take a break from show business because the fears became too much to bear. After taking some time to focus on treatment, he's since returned to television!

The highly respected broadcaster is known for his refreshingly blunt personality. So it came of great shock when he revealed in 2012 that he was suffering from anxiety disorder. Lee Kyung Kyu revealed that the anxiety was so bad he couldn't get by a day without taking his medication. The veteran broadcaster has opened up about the difficulties of living a life in the public eye for 30 years. "It's scary to think that someone is watching me where ever I go," he said.

Cha Tae Hyun became a megastar after his iconic role in the film 'My Sassy Girl.' But in an appearance on the show "Healing Camp" in 2011, the actor revealed that he had struggled with panic disorder as his fame and productions declined gradually over time.

He shared a scary incident that occurred during his trip to a concert in China. He said that he had just eaten, and suddenly began sweating and having trouble breathing. It got so bad that he asked flight attendants for an oxygen mask and even asked if they could ground the plane and let him off. After the incident, the actor revealed he couldn't fly for some time, especially for destinations that were more than ten hours away.

Because of his panic disorder, Cha Tae Hyun said he also fainted and was admitted to the ER several time. He even tried taking MRI exams and got his heart condition checked. Eventually, he was prescribed some anti-anxiety medicine. At the time, he said he couldn't even step out of the house without the meds.

At the time he recalled his struggles on "Healing Camp," Cha Tae Hyun had overcome his panic disorder and was healthy!

Cha Tae Hyun revealed that he visited a wide range of doctors out of desperation to treat his anxiety. He even visited a doctor of oriental medicine. On the episode of "Healing Camp," he made everyone laugh by sharing that the doctor had advised him that "looking far into the mountains" would help whenever he suffered a panic attack.

But anxiety is certainly no laughing matter. And as more stars come forward about their personal battles -- Ga In of Brown Eyed Girls also recently shared on her Instagram account that she was being treated for anxiety and insomnia -- it paves opportunities for increased dialogue about this serious issue and assures all who are affected that they are certainly not alone.