Here's what you need to know..
When you experience a multiple sclerosis relapse (also known as an exacerbation or flare-up), it's because new damage in the brain or spinal cord disrupts nerve signals. That's why you might notice new symptoms or the return of old symptoms. A true relapse lasts more than 24 hours and happens at least 30 days after any previous relapses. Relapses vary in length, severity, and symptoms. Over time, symptoms should improve. Many people recover from their relapses without treatment.
Damage to the protective covering of nerve fibers interrupts normal signals from the brain to the body. When those signals are disrupted, your body doesn't function ike it once did. Things you did easily before can seem difficult -- like opening a jar or turning a doorknob. Sudden or worsening weakness that doesn't go away could mean you're having a relapse.