Selma Blair revealed she's in remission from multiple sclerosis.

"My prognosis is great. I’m in remission," she told reporters on Monday during a Television Critics Association panel.

She said it's a result of undergoing hematopoietic stem-cell transplantation. 

"It took about a year after stem cell for the inflammation and lesions to really go down, so I was reluctant to talk about it because I felt this need to be more healed," Blair, 49, said. "I don’t have any new lesions forming."

SELMA BLAIR EXPLORES MS DIAGNOSIS IN DOCUMENTARY

"Cognitively, I’m very changed and that’s been the harder part," she said via video chat while promoting her documentary "Introducing, Selma Blair" which debuts Oct. 15 in theaters and begins streaming Oct. 21 on Discovery+.

The 'Legally Blonde' star was diagnosed with multiple sclerosis in 2018.

The 'Legally Blonde' star was diagnosed with multiple sclerosis in 2018. (Richard Shotwell/Invision/AP, File)

The "Legally Blonde" star was diagnosed with multiple sclerosis in 2018. 

The doc's director, Rachel Fleit, said during the panel: "Selma was ready to tell this story in all of its honesty and rawness and truth. She had a few medical emergencies during filming. When she was like, ‘Yes, show it all,’ I was like, ‘This is extraordinary.’"

SELMA BLAIR RECALLS FIRST MS SYMPTOMS IN THROWBACK PHOTO: 'I DIDN'T KNOW WHAT WAS HAPPENING'

The National Multiple Sclerosis Society describes multiple sclerosis as "an unpredictable, often disabling disease of the central nervous system that disrupts the flow of information within the brain, and between the brain and body." 

The cause of the disease is still unknown but it is believed to be a combination of environmental and genetic factors. The organization notes that there are an estimated 1 million people living with multiple sclerosis in the United States right now. 

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Blair called getting the multiple sclerosis diagnosis "very isolating" but leaned on her 10-year-old son, Arthur, and friends and family for help.

"People took great care of me. I never really like life. I do now — strange, huh?" she said. "Just because life's so weird. I was so scared in life. To suddenly start to find an identity and a safety in me, to figure out boundaries, time management and energy. I'm having the time of my life."