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Christina Applegate says she was misdiagnosed with multiple sclerosis, a revelation that has left the actress facing renewed uncertainty about her health. The 54-year-old performer shared the news Tuesday during a new episode of the MS-focused podcast “MeSsy,” which she co-hosts with actress Jamie Lynn Sigler.
Applegate said a doctor recently told her that she does not have MS, despite having been publicly diagnosed with the neurological and autoimmune disorder in 2021. She described the moment as shocking rather than reassuring, saying the news made her feel as though she had returned to “square one.”
Christina Applegate Reveals a Shocking Health Mystery
“This may come as great news, but to me, it comes as like, very like I’m back at square one,” Applegate said on the podcast. She recalled her doctor entering her room and saying, “Congratulations, you don’t have MS.”
Rather than ending her health struggles, the revised diagnosis has created more questions. Applegate said she continues to experience symptoms commonly associated with MS and believes her condition has worsened in certain ways since her original diagnosis.
“If anything, I’ve gotten worse in some ways,” she said. “I don’t know what’s going on with me.” She added that her doctors would begin a detailed investigation into what has happened since 2021 and why she was initially diagnosed with multiple sclerosis.
The Actress Says Symptoms Have Not Disappeared
Applegate emphasized that nothing immediately changed when she was told she may not have MS. She said she still needs a wheelchair to attend some medical appointments because she cannot walk from a vehicle into a doctor’s office.
“Nothing magical happened when [the doctor] said, ‘You don’t have MS.’ Nothing magical happened,” she said.
The actress also revealed that she took a break from “MeSsy” to process the news. She described the experience as deeply confusing and said the misdiagnosis had contributed to a “great depression.” Her comments highlight the emotional toll that uncertainty can take on people living with chronic or unexplained symptoms.
Why Multiple Sclerosis Can Be Difficult to Diagnose
According to medical information cited by ABC News, there is no single test that confirms multiple sclerosis. Doctors typically use a combination of neurological examinations, MRI scans, medical history and laboratory testing when evaluating a patient.
MS symptoms can also overlap with those of other illnesses. They may include fatigue, numbness, tingling, weakness, dizziness, vertigo and bladder-control problems. Symptoms can appear unpredictably, making the diagnostic process more complicated.
In a follow-up episode of “MeSsy,” Applegate and Sigler spoke with Dr. Marwa Kaisey, an associate professor of neurology at Cedars-Sinai Medical Center in Los Angeles. Kaisey said Applegate is not alone, noting that her research found nearly one in five people diagnosed with MS may have been misdiagnosed.
Kaisey attributed the risk to the absence of one definitive diagnostic test and the fact that many symptoms associated with MS are also common in other conditions. A revised diagnosis can therefore require additional testing and careful review by medical specialists.
A Painful Loss of Community and Identity
Applegate said the possible misdiagnosis has affected more than her medical care. She explained that she had built a sense of community around living with MS, particularly through her work with Sigler and the podcast.
“It’s weird because I feel like I let everybody down,” she said. Applegate added that she and Sigler had become closely associated with MS advocacy and awareness, leaving her unsure of how to understand her own role after being told she may not have the disease.
She said the diagnosis had given her experiences a framework and a reason to speak publicly. Without that explanation, she feels unsettled and confused about what comes next.
What Happens Next for Christina Applegate?
Applegate’s doctors are expected to investigate her medical history and ongoing symptoms, including what has occurred since her 2021 diagnosis. At this stage, she has not publicly identified an alternative diagnosis.
Her experience serves as a reminder that people with persistent neurological symptoms may require continued evaluation, even after receiving an initial explanation. Medical experts stress that individuals should discuss changing symptoms and diagnostic concerns with qualified healthcare professionals rather than stopping treatment on their own.
Frequently Asked Questions
What did Christina Applegate reveal about her diagnosis?
Christina Applegate said a doctor told her she does not have multiple sclerosis, despite her public diagnosis in 2021. She remains under medical evaluation because her symptoms continue.
Does Applegate still have MS symptoms?
Yes. Applegate said she still experiences symptoms associated with MS and continues to need a wheelchair for some medical visits.
Why is multiple sclerosis difficult to diagnose?
There is no single test for MS. Doctors may need to combine neurological exams, imaging, laboratory testing and a patient’s medical history because symptoms can overlap with other conditions.
Who is Jamie Lynn Sigler?
Jamie Lynn Sigler is an actress and Applegate’s co-host on the “MeSsy” podcast. Sigler has also spoken publicly about living with multiple sclerosis.
What happens next for Applegate?
Her doctors plan to investigate her symptoms and medical history to better understand what has been happening since 2021. No alternative diagnosis has been publicly announced.
