(CNN) Television and film actress Selma Blair announced that she has been diagnosed with multiple sclerosis.
In an Instagram post Saturday, the "Cruel Intentions" actress revealed she was diagnosed in August, and is facing the effects of the disease everyday.
Famous people with multiple sclerosis
Actress Selma Blair was diagnosed with MS in 2018 but said her symptoms started after the birth of her son in 2011.
Comedian, actor, and voice actor Jonathan Katz said he initially began experiencing MS symptoms in 1996.
TV personality Jack Osbourne was diagnosed with MS in 2012, just weeks after the birth of his daughter.
"Sopranos" actress Jamie-Lynn Sigler, 34, revealed that she has multiple sclerosis in People magazine. She told the magazine she was diagnosed with the disease when she was 20.
NASCAR driver Trevor Bayne announced that he was
diagnosed in 2013. The chronic disease affects the central nervous system, often causing pain, numbness in the limbs and a loss of vision.
Actress Teri Garr was diagnosed with multiple sclerosis in 1999. Garr might be best known for her roles in the iconic 1980s films "Mr. Mom" and "Tootsie."
It has been more than 15 years since musician Clay Walker was diagnosed with multiple sclerosis. He says he's learned to
manage his condition by eating a healthy diet, exercising and taking his medication.
Josh Harding, formerly a goaltender with the NHL's Minnesota Wild, was diagnosed with MS at the age of 28.
Singer Alan Osmond, left, and his son David Osmond both live with multiple sclerosis.
Fox News anchor Neil Cavuto was diagnosed with multiple sclerosis in 1997.
Talk-show host Montel Williams was diagnosed with multiple sclerosis in 1999. Williams said then that he had been misdiagnosed for 10 years.
Noah "40" Shebib, a Canadian hip-hop producer who has collaborated with artists such as Drake and Lil Wayne, was diagnosed with multiple sclerosis in his early 20s.
David Lander, left, who played Squiggy on TV's "Laverne & Shirley," hid his diagnosis for 15 years "primarily because I didn't think show business would embrace the fact that I have a chronic disease known as multiple sclerosis," he said in a 2001
interview with CNN.
Ann Romney, wife of former presidential candidate Mitt Romney, was diagnosed with MS in 1998.
Ten years ago, singer Tamia Hill was diagnosed with multiple sclerosis. She has recorded four albums since.
Chris Wright was the first-known NBA player with multiple sclerosis. The former Dallas Maverick now plays professionally in Israel.
"I am disabled. I fall sometimes. I drop things," she posted. " My memory is foggy. And my left side is asking for directions from a broken gps. But we are doing it. And I laugh and I don't know exactly what I will do precisely but I will do my best."
Multiple sclerosis is a neurological disease that occurs when there's a breakdown in communication between the brain and other parts of the body, according to the National Institutes of Health. Symptoms include blurred vision, and difficulty with coordination and balance.
Multiple sclerosis affects 400,000 people in the United States and 2.1 million people worldwide, the NIH says.
Blair, 46, said she's had symptoms for years, and thanked her producers at Netflix for being understanding. She said she hopes "to give some hope to others. And even to myself," and encourage people to ask for help when they need it.
"I have probably had this incurable disease for 15 years at least. And I am relieved to at least know," she posted.
Blair has appeared in films and TV shows such as "Legally Blonde" and FX comedy "Anger Management."
Several celebrities have revealed they have multiple sclerosis, including TV personality Jack Osbourne, talk show host Montel Williams and "Sopranos" actress Jamie-Lynn Sigler.