Christina Applegate reveals she has multiple sclerosis

Christina Applegate is sharing devastating news … she has multiple sclerosis.

The actress revealed the news Monday night saying, “A few months ago I was diagnosed with MS. It’s been a strange journey. But I have been so supported by people that I know who also have this condition.”

The 49-year-old actor known for her roles in “Married… with Children” and “Dead to Me,” said in a tweet late Monday that she was diagnosed “a few months ago.”

“It’s been a strange journey. But I have been so supported by people that I know who also have this condition,” wrote Applegate. “It’s been a tough road. But as we all know, the road keeps going.” She added in a later post: “Now I ask for privacy. As I go through this thing.”

Multiple sclerosis — also known as MS — affects the nervous system and often results in progressive physical and cognitive decline.