Jamie-Lynn Sigler's Private Battle With Multiple Sclerosis

The 34-year-old former "Sopranos" star is opening up about her 15-year battle with the condition.
4:12 | 01/20/16

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Transcript for Jamie-Lynn Sigler's Private Battle With Multiple Sclerosis
Now to former "The sopranos" star jamie-lynn Sigler's secret health battle. The actress revealing in "People" magazine she has been battling multiple sclerosis for more than a decade. Jesse palmer is here with that story. Jesse. Thanks, Lara. You know, jamie-lynn has been making this revelation for her family, her new husband and young son and opening up about her 15-year battle with this debilitating condition. It wasn't my fault. Reporter: She's best known for her role playing Tony soprano's daughter meadow. We're under a lot of pressure, okay. Reporter: But during her time on "The sopranos" actress jamie-lynn Sigler given a heartbreaking diagnosis that she kept secret for nearly 15 years. I was diagnosed with Ms when I was 20 years old. It was a shock. Reporter: This morning, sig Sigler revealing after she struggled with Lyme disease she was left with tingling in her legs diagnosed with multiple sclerosis just a year later. She confided in one of her famous co-workers. Jamie-lynn Sigler kept this secret for a long time. She would never tell people she worked with but she did ultimately confide in James gandolfini because she trusted him. I didn't want to hold a secret where it feels like I have something to be ashamed of. It's part of who I am. It's not who I am. Reporter: Also part of her decision to speak out her 2-year-old son beau. She didn't want her son to think he had to keep the secret about her and asking why she might be tired and wanted to see if she could help people with this. Reporter: Sigler telling "People" her Simms gradually getting worse saying she can't walk for a long period without resting. I cannot run. No superhero roles for me. But despite her disease, Sigler doing her best to live life to the fullest. The 34-year-old recently celebrating her wedding to pro baseball player cutter Dykstra, the two married by lance bass over the weekend. She just married somebody who she's deeply in love with, has a beautiful son with and counting her blessings. She goes on to say she's finally got her medication under control and feeling better and happy with her new husband cutter and her son beau. Thank you so much, Jesse. I'm joined by Dr. Jen Ashton. Just want to ask how hard do you think -- how brave is it for her to come out and had you helpful for other. We always think it's helpful when a celebrity uses their illness or chronic condition to bring awareness and this is an example that the disease or the illness does not define the person. I love that. It doesn't define you. But it's still -- I as an actress might be like, ooh, I don't know. Does this become a label, a badge. Right, and I think that she and so many people struggling with this or any other chronic condition have to face that, whether it's in a small circle or nationally coming public. But, you know, I think you ask how hard could it have been to hide it. Fatigue is the most debilitating hallmark sign or symptom that affects women and men dealing with Ms, it affects about 90% of people, it can be physical or even psychological. So many of us are exhausted all the time especially with a job like this. We don't sleep well. Are there other signs besides being extremely tired. There are. I want you to look at this. There are a lot of vague symptoms but, remember, this is an immune condition that affects the central nervous system. You can see anything occurring from blurred or visual problems, problems thinking, cognitive issues, lack of coordination with motor function, loss of balance or even numbness or tingling. Now, certainly not all of these signs or symptoms means someone as some. The diagnosis is usually brain imaging like an mrism, a good history and physical exam and, again, it's a chronic issue that people have to live with for their lives. Have there been advance, though. There is reason for hope. The mainstay of treatment is medication to kind of suppress the immune system and then rehabilitation therapy for people having difficulty with motor function, just yesterday we heard exciting news on use of stem cells so there's always reason for hope. Oh, that's great hope. Absolutely. A beautiful word for sure. Dr. Jen, I thank you so much.

This transcript has been automatically generated and may not be 100% accurate.

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