Whitney Houston’s boyfriend Ray J has been released from a Las Vegas hospital following a scare about a “blood clot” that could have been “deadly,” RadarOnline.com has learned.

“Ray J is back home in Los Angeles following an extensive battery of tests to make sure that he did not have a blood clot in his lungs which is potentially a deadly condition that can occur following a long haul plane flight,” his rep  told RadarOnline.com.

Whitney Houston’s boyfriend Ray J has been hospitalized in Las Vegas, RadarOnline.com has learned.

Following an appearance at the Billboard Music Awards Sunday in Vegas, Ray J was rushed to the hospital. 

A source close to Ray J described his health situation, saying “he’s been in a Las Vegas area hospital since the early morning of Monday, May 21, and will remain there for treatment for exhaustion and jet lag.”

Demi Moore is the latest star to cite "exhaustion" for her recent trip to the hospital, and she's far from the first Hollywood A-lister to suffer from the ailment.

Life in the public eye must be so tiring, as countless others have used the same excuse for heading to the ER or rehab, and RadarOnline.com takes a look back at some of the high-profile victims of extreme tiredness.

PHOTOS: Demi Moore Joins A Slew Of Celebrities Suffering From 'Exhaustion'

As RadarOnline.com previously reported, 49-year-old Ghost star was rushed to a hospital in Sherman Oaks, California on Monday night and is now seeking professional help "to treat her exhaustion and improve her overall health," according to her publicist, Carrie Gordon.

Bad Girls Club star Natalie Nunn was rushed to the emergency room early Tuesday morning, RadarOnline.com is exclusively reporting.

The 25-year-old collapsed in her Hollywood Hills condo of “exhaustion” and was taken to Cedars-Sinai Medical Center where she was released later in the day.

PHOTOS: Natalie Nunn Childhood Photos

We know who she’s in love with!

Selena Gomez filmed the music video for her new song I Love You Like a Love Song and RadarOnline.com has the adorable shots of the 18-year-old on set.

PHOTOS: Selena Healthy And Happy Back At Work

Looking happy and healthy in her colorful costumes, fresh-faced Selena was back at work just days after her hospitalization with food poisoning and exhaustion.