Andie MacDowell, 66, diagnosed with painful neuromuscular disorder

"I have piriformis syndrome, so it's a muscle that kind of clamps down on my sciatic nerve, and it was shooting down my leg," MacDowell shared on "The Drew Barrymore Show."

"I thought I was going to have hip replacement - thank God, my hips are fine," she remarked.

During her appearance, MacDowell made a vulnerable admission about her health, saying she thought she was "literally falling apart" after she started riding her indoor bike "like a crazy person."

During her interview, MacDowell touched on how she's coped with her children growing older and moving out.

The "St. Elmo's Fire" actress shares three children with her ex-husband, Paul Qualley - daughters Margaret and Rainey, along with their son Justin. Both daughters have followed in their mom's acting footsteps.