Jamie-Lynn Sigler has been battling multiple sclerosis for the past 15 years.
"The Sopranos" actress tells People magazine she was diagnosed with the degenerative disease when she was 19 years old, ahead of the show's fourth season.
Sigler says she wasn't emotionally prepared to reveal her condition to the public until now.
The 34-year-old actress says her symptoms have become worse over the past decade. Sigler noted that she can't run or walk for long periods of time without rest.
"The Sopranos" actress portrayed Meadow Soprano throughout the HBO show's six seasons. She has also appeared in stage productions of "Cinderella" and "Beauty and the Beast."
Sigler married baseball player Cutter Dykstra on Saturday in Palm Springs, California. They have a 2-year-old son, Beau.