Christina Applegate’s MS Misdiagnosis Leaves Her Worse Off and Back at Square One

Christina Applegate’s MS Misdiagnosis Leaves Her Worse Off and Back at Square One
Christina Applegate’s reversal from prominent MS advocate to patient without a confirmed diagnosis has not brought relief. Instead, it has left her with persistent mobility problems, no clear explanation for her symptoms and a renewed search for answers.

Applegate disclosed the change on her podcast MeSsy, saying doctors had concluded that she was misdiagnosed after being treated since 2021. “I’m back at square one – that I don’t know what’s going on with me,” she said. The new finding has not restored her health: “I haven’t gotten better, Jamie. If anything, I’ve gotten worse in some ways.”

Her experience exposes a tension at the heart of MS diagnosis. The disease has no single confirming test; doctors assess symptoms alongside brain imaging and other markers. Lesions that appear consistent with MS can also result from migraines, high blood pressure, smoking and other conditions. As Dr. Josef Gutman put it, “There’s a lot of things going into the diagnosis,” unlike diabetes, which can often be identified through one blood test.

The medical perspective is cautious rather than dismissive. Specialists cited by CBS News said major studies estimate that 15% to 20% of people diagnosed with MS are later found not to have it, while emphasizing that the majority of diagnoses are correct. They recommend second opinions, advanced MRI scans, spinal imaging or spinal-fluid analysis when symptoms fail to improve or the diagnosis is uncertain.

For Applegate, however, diagnostic correction has created a new psychological burden. “Nothing magical happened when she said, ‘You don’t have MS,’” she said, noting that she still uses a wheelchair for medical visits. The central difference between her perspective and the clinical one is stark: doctors can revise a label, but Applegate is still living with the illness that prompted it—and without knowing what caused it.