Christina Applegate lived with an MS diagnosis for 5 years. Now she's learned it was wrong — and her symptoms remain unexplained.

Christina Applegate discovered that her MS diagnosis, which she lived with for five years, was incorrect. Despite this revelation, her symptoms remain unexplained. Researchers indicate that approximately 15% of patients diagnosed with MS do not actually have the condition. Additionally, actress Selma Blair revealed on The Jenny McCarthy Wahlberg Show that she had previously urged Applegate to undergo an MRI to investigate potential MS symptoms, highlighting the complexities surrounding the diagnosis of the neurological disease.