Christina Applegate says she was wrongly diagnosed with MS

• Diagnostic delays in MS remain a clinical concern: Applegate's five-year misdiagnosis highlights the importance of rigorous diagnostic criteria and consideration of differential diagnoses in patients presenting with MS-like symptoms.
• Multiple conditions can mimic MS clinically and radiologically: Practitioners should maintain a broad differential when evaluating suspected MS cases, as other conditions can produce similar presentations and imaging findings.
• Patient advocacy raises awareness of diagnostic error: High-profile cases underscore the need for robust diagnostic protocols, second opinions when appropriate, and clear communication with patients about diagnostic uncertainty in complex neurological cases.

Christina Applegate thought she was living with multiple sclerosis (MS) for five years, until recently discovering she had been given a wrong diagnosis.

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