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Christina Applegate Undergoes New Tests After MS Diagnosis Was Reversed

Clinicians are running stepwise tests for autoimmune and infectious conditions that can mimic MS to find an alternate cause for her ongoing symptoms.

Overview

  • Applegate, who said on October 20 that doctors concluded she does not have the multiple sclerosis diagnosis she received in 2021, has returned to medical testing to seek another explanation.
  • Her medical team is performing sequential tests and specialist referrals to check for rheumatoid arthritis, lupus, Lyme disease and similar disorders that can produce MS‑like symptoms.
  • Clinicians have paused or rechecked some prior therapies and are re‑reviewing earlier scans and lab work as part of the new diagnostic process.
  • Despite the reversal, Applegate continues to experience severe mobility and pain problems—she still uses a wheelchair for some appointments and has not seen improvement in daily function.
  • The case highlights limits in MS diagnosis, notes that newer evaluation technology contributed to the correction, and could prompt broader re‑examinations of inconclusive or long‑standing MS diagnoses.