March 15, 2016
Leah Messer And Corey Simms' Daughter Ali Faces Physical Challenges Due To Muscular Dystrophy: Watch 'Teen Mom 2' Sneak Peek

Leah Messer and Corey Simms' 6-year-old daughter, Ali, will be seen facing hardships during the upcoming sixth season of Teen Mom 2. Since being diagnosed with a rare form of muscular dystrophy years ago, Ali's condition has continuously worsened, and soon, her doctor has claimed, she will be limited to a wheelchair.

In a just-released sneak peek at the new season, Leah Messer and Simms take their daughter to the doctor, where they receive some not-so-good news.

"We wanted to see Ali today and talk to you about everything," Dr. Tsao, a neuromuscular specialist, tells Leah Messer and her ex-husband in a sneak peek shared by Radar Online on March 15. "You mentioned that she will fall and hit her knee, right? She is not using her power wheelchair for the last three months, right?"

Although Leah Messer and Simms did arrange for their daughter to have a power wheelchair, Ali is able to walk unassisted and rarely uses the device. In addition, the chair has reportedly been damaged, which has left it in need of repairs.

After the doctor asks Leah Messer and her ex-husband about Ali's regular falls, the former couple reveals that their child falls "at least" five times each day.

"Her strength is still quite decent, but once she's getting to age seven, then gradually, the maturity affects her. Then she may very slowly get weaker," the doctor explains, adding that as she ages, Ali will become more and more dependent upon her wheelchair.

"I think that she needs to have [a] power wheelchair all the time," he concluded. "So the most important thing is to fix her power wheelchair."

The doctor also suggested Leah Messer apply for the Make-A-Wish Foundation, which may help her and her family out with Ali's ongoing medical bills.

As the scene continues, Leah Messer, who once slammed Simms for not taking their daughter's illness seriously, attempts to convince her doctor to allow Ali to make her own health decisions when she gets older. However, as Radar Online revealed, Ali's prognosis was far more serious than she realized.

"She has muscular dystrophy," Dr. Tsao said. "If she gets weaker, then she may not enjoy much either. Right now she still can walk. She's going to get weaker over time. Close to seven it starts to go downhill."

Leah Messer and her ex-husband were at war during Season 6 of Teen Mom 2, and after the series wrapped filming last summer, things between them got even worse. After claiming Leah Messer was hiding a drug habit (which her second husband, Jeremy Calvert, claimed was a prescription pill problem), Simms went to court to get custody of their twin girls, Ali and Aleeah, which he did.

However, as Us Weekly reported in January, Leah Messer eventually regained shared custody of her kids after coming to an agreement with Simms prior to their second hearing. While the pair was not previously on good terms, Leah Messer and Simms have turned over a new leaf with the new year and appear to be doing quite well since embarking on the new arrangement.

For more of Leah Messer and Corey Simms, as well as their families, tune into the Season 7 premiere of Teen Mom 2, airing on Monday, March 21, at 10 p.m. on MTV, and check out the sneak peek below.

[Photo via Leah Messer/Facebook]