Overview
- Applegate announced on an MS podcast that clinicians told her a new analysis of her brain MRIs found she does not have multiple sclerosis, but she continues to experience the same symptoms.
- The reclassification relied on newer imaging methods that compare patient scans to reference data and assess biomarkers such as the central vein sign, a marker that helps distinguish MS lesions from other causes.
- Diagnosing MS still depends on assembling clinical history, lesion patterns on MRI and exclusion of other conditions under the McDonald Criteria, which was updated in 2024 to include more specific tests.
- Research has estimated that about 15 to 18 percent of initial MS diagnoses are later revised, a problem that can lead to unnecessary treatments, ongoing unexplained symptoms and emotional harm for patients.
- Clinicians are re‑examining prior scans and the case underscores both the promise of advanced MRI tools to reduce misdiagnosis and persistent gaps such as lack of a single definitive test and possible gender bias in care.