Ann Romney opens up about health "scare"

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(CBS News) Ann Romney, the wife of Republican presidential candidate Mitt Romney, opened up in a new interview about her struggle with multiple sclerosis on the campaign trail, including a "scare" she had ahead of Super Tuesday.

"There have been some days, like the day before Super Tuesday, I was quite fatigued and I knew I couldn't quit," Romney said in an interview with Entertainment Tonight, which airs on Thursday night. "I didn't tell anybody I was tired. I just kept going. I had a little bit of a scare. I start to almost lose my words. I can't think, I can't get words out, I start to stumble a little bit. Those things were happening, and I thought, uh oh, big trouble."

Multiple sclerosis is an autoimmune disease that affects the brain and spinal cord. Symptoms of the chronic disease hit each person differently, but it can be disabling.

As the Romney campaign transitions into general election mode, Ann Romney is taking a higher profile, in part to help her husband craft a more relatable persona. On Ann Romney's birthday, the campaign released a video celebrating her life, which featured highlights of the Romney family's life.

On Super Tuesday on March 6, when Romney won six of 10 nominating contests, Ann Romney took the stage to speak about why her husband's campaign should appeal to women voters.

Watch the full report featured on "CBS This Morning" in the video above.