# Christina Applegate's MS Misdiagnosis Mystery

> Christina Applegate's MS misdiagnosis leaves her 'back at square one' as doctors confirm misdiagnoses are 'fairly common'.
- Title: Christina Applegate's MS Misdiagnosis Mystery · LADbible
- Summary: Christina Applegate's MS misdiagnosis leaves her 'back at square one' as doctors confirm misdiagnoses are 'fairly common'. Christina Applegate's multiple…
- Keywords: christina applegate, multiple sclerosis, misdiagnosis, cedars-sinai medical center, dr marwa kaisey, ms misdiagnosis, entertainment, culture, news, Christina, Applegate's, Mystery
- Source: LADbible — https://ladbible.com/lifestyle/christina-applegate-ms-misdiagnosed-why-common-579936-20261020
- Published: 2026-10-20T16:48:01.825+00:00
- Read time: 1 min
- Topics: christina applegate, multiple sclerosis, misdiagnosis, cedars-sinai medical center, dr marwa kaisey, ms misdiagnosis, entertainment, culture, news
## Christina Applegate's MS Diagnosis
Christina Applegate was diagnosed with multiple sclerosis in 2021 but now faces uncertainty about her condition.
## Misdiagnosis Prevalence
Nearly 20 percent of people diagnosed with MS later find they don't have the condition, according to Dr Marwa Kaisey.
## Doctor's Explanation
Dr Marwa Kaisey explained there's no single test for MS and misdiagnosis remains a problem with significant clinical implications.
## Applegate's Reaction
Applegate says she's 'back at square one' as her symptoms persist and her illness is now a mystery.

> back at square one
## Misdiagnosis Causes
Conditions mistaken for MS include migraine, cerebral small vessel disease, fibromyalgia, and neuromyelitis optica spectrum disorders.
## Key takeaway

Christina Applegate's multiple sclerosis misdiagnosis is now a mystery after new technology revealed she doesn't have the condition.