Verified Evidence: resolved · Fact Lock: locked · QA: pass
Christina Applegate said she was misdiagnosed with multiple sclerosis and remains affected by persistent symptoms, despite learning that she does not have the disease. She made the disclosure during an episode of the MeSsy podcast released on October 20, 2026.

Applegate said the new information left her “back at square one” because she had not improved and had become worse in some ways. Her account changes the public understanding of a multiple sclerosis diagnosis that had been reported in 2021, but the supplied evidence does not identify her actual medical condition or explain the medical basis for the revised diagnosis.

She said she continues to experience symptoms associated with MS despite the revised information about her diagnosis. According to PBS NewsHour’s reporting of Applegate’s account, she sometimes needs a wheelchair to travel from a car to a doctor’s office because she cannot walk that distance.

The disclosure was made on MeSsy, the podcast Applegate co-hosts with Jamie Lynn Sigler. Reports said Applegate had lived with the MS diagnosis for years after receiving it in 2021 before learning that it was wrong.

The available reporting presents the diagnosis change primarily through Applegate’s own comments. It does not provide medical records, name an alternative condition or identify a physician independently confirming the revised diagnosis. What is established is that Applegate says the MS diagnosis was incorrect while her serious symptoms continue, leaving the underlying cause unresolved in the supplied evidence.

SOURCES

  1. The Hollywood ReporterChristina Applegate Reveals She Was Misdiagnosed and Does Not Have MS: “I Haven’t Gotten Better … I’m Back at Square One”
  2. DeadlineChristina Applegate Reveals MS Misdiagnosis: “I Am Back At Square One”
  3. BBC NewsChristina Applegate says she was wrongfully diagnosed with MS
  4. PBS NewsHourChristina Applegate says she was misdiagnosed and does not have MS
  5. VarietyChristina Applegate Reveals She Was Misdiagnosed With MS: ‘I’m Back at Square One’ and It’s a ‘Mindf—’