Christina Applegate reveals she was misdiagnosed with multiple sclerosis: "Not happy at all"

TL;DR

Christina Applegate announced that she was misdiagnosed with multiple sclerosis (MS) more than five years after her initial diagnosis.
The misdiagnosis came to light after her doctor questioned her infusion treatment and observed her B cell count.
Applegate expressed unhappiness with the misdiagnosis, stating that her symptoms have continued and even worsened.
She described the misdiagnosis as unnerving and confusing, and is now undergoing a new investigation with her doctors to identify the cause of her health issues.
Multiple sclerosis is a disease where the immune system attacks the central nervous system, and misdiagnoses are considered fairly common due to the lack of a single definitive test.

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