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Christina Applegate said on her podcast that a doctor told her her multiple sclerosis diagnosis was incorrect, leaving her uncertain about the cause of her ongoing symptoms. The report does not identify the doctor or explain what testing led to the reassessment; neurologists say MS diagnosis involves multiple pieces of evidence and can be difficult.
Actor Christina Applegate said a doctor told her that the multiple sclerosis (MS) diagnosis she announced in 2021 was incorrect, leaving her uncertain about what is causing her ongoing symptoms. Speaking on her podcast, she said she still has symptoms she associates with MS and needs a wheelchair to get from her car to medical appointments.
Applegate discussed the reassessment on MeSsy, the podcast she co-hosts with actor Jamie-Lynn Sigler, who has MS. “I’m back at square one where I don’t know what’s going on with me,” Applegate said, according to MedPage Today. The report, published October 21, 2026, says the doctor told her the diagnosis was incorrect but does not identify the physician or describe the medical evaluation behind that conclusion.
Applegate said she continues to experience “every symptom of someone with MS” and cannot walk from her car to the examination room without using a wheelchair. Her comments describe her own experience; the report does not provide a new diagnosis or specify what condition, if any, may account for her symptoms. She also said the change has been emotionally difficult because of her public association with the MS community.
“It’s weird because I feel like I let everybody down,” Applegate said on the podcast. She called the situation “very unnerving” and “really confusing.” Her remarks do not establish that her symptoms have stopped or that she has received a final explanation for them.
Why an MS Reassessment Matters
The news highlights the consequences of a diagnosis being revisited: a patient may lose the certainty of an explanation while still living with significant symptoms and mobility limitations. For Applegate, the change also affects how she understands her public role as an advocate alongside Sigler. Her account underscores that a diagnostic correction does not necessarily mean a person’s symptoms are absent or resolved.
For patients and families, the distinction between symptoms and their cause matters. A person can have symptoms that resemble MS without those symptoms confirming MS, and uncertainty can continue while clinicians investigate other possibilities. The report does not state what care Applegate is receiving now, so it is not possible to say how the reassessment will affect her treatment.
Neurologists quoted by MedPage Today described a broader clinical balance: identifying MS early can allow patients to access treatment sooner, but a diagnosis needs to be accurate. That tension is relevant beyond this individual case, while Applegate’s own medical details remain limited to what she shared publicly.
How Clinicians Diagnose MS
MS is not diagnosed through one standalone test, said Marisa McGinley, a neurologist at the Cleveland Clinic, in comments to MedPage Today. Doctors consider a combination of clinical findings and test results, while evaluating other possible explanations. McGinley described the process as a “complex algorithm” and said misdiagnosis is a reality in the field.
MedPage Today reported that estimates of MS misdiagnosis vary. McGinley cited studies reporting rates below 10% and others approaching 20%, but Bruce Bebo, chief research and medical affairs officer at the National Multiple Sclerosis Society, cautioned against treating one percentage as definitive. He said many studies draw on patients referred to specialty centers, where difficult cases may be overrepresented.
Bebo described diagnosis as “like putting a puzzle together.” Symptoms associated with MS can occur in other conditions, and MRI abnormalities do not by themselves establish MS. The report says the McDonald diagnostic criteria were updated in 2024. It describes MRI findings typical of MS as required for diagnosis and notes that, in some circumstances, markers such as the central vein sign or paramagnetic rim lesions may help improve specificity.
““A big crux of the issue is that there’s no single test that equals an MS diagnosis.””
— Marisa McGinley, Cleveland Clinic neurologist, to MedPage Today
What Applegate Has Not Disclosed
The report does not name the doctor who reconsidered Applegate’s diagnosis, explain what tests or records prompted the change, or say whether another clinician has independently reviewed the case. It also does not identify an alternative diagnosis or establish whether the reassessment is final. Applegate’s statements are her account of what she was told and of the symptoms she continues to experience.
It remains unknown what is causing her symptoms, whether she is undergoing further testing, and what treatment or care plan she is following. The percentages cited for MS misdiagnosis are estimates from studies with varying methods, not a measurement of Applegate’s case or a single agreed rate for all patients.
Further Testing and Diagnosis
Applegate has not announced a next medical milestone or said when she expects more answers. Further evaluation may be needed to determine what is causing her symptoms, but the available report does not say whether additional tests or specialist consultations are planned.
For now, the confirmed public update is limited: Applegate says a doctor told her the MS diagnosis was incorrect, while she continues to report symptoms and mobility challenges. Any revised diagnosis, treatment decision, or explanation of the underlying cause remains unreported.
Key Questions
What did Christina Applegate say about her MS diagnosis?
Applegate said on MeSsy that a doctor told her the multiple sclerosis diagnosis she announced in 2021 was incorrect. She said she still has symptoms and does not know what is causing them.
Does Applegate have a new diagnosis?
The report does not identify a new diagnosis. Applegate said she feels she is “back at square one,” and the cause of her ongoing symptoms remains unclear in the information available.
Why can MS be difficult to diagnose?
Neurologist Marisa McGinley told MedPage Today that there is no single test that establishes MS. Clinicians consider a combination of symptoms, imaging and other evidence, while checking for other possible causes.
How common is MS misdiagnosis?
MedPage Today reported that studies cited by McGinley have produced estimates below 10% and close to 20%. Bruce Bebo cautioned that estimates vary and may be affected by studies drawing on referrals to specialty centers.
What happens next for Applegate?
Applegate has not publicly described a testing plan, a new diagnosis or a timeline for getting answers. The report says she continues to experience symptoms and mobility difficulties.
Source: rss
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