Scott Baio's wife was diagnosed with microvascular brain disease in October 2017, the couple confirmed Saturday.
Renee Sloan first shared the news via Twitter.
"Besides having 2 meningioma brain tumors, in Oct 2017 I also learned I have Microvascular Brain Disease," the 45-year-old former stunt woman wrote.
Baio, 57, confirmed the news in a heartfelt retweet of his wife's post about her diagnosis.
"Unfortunately, this is true," he wrote. "Renee is forever my rock, my life & my soulmate! Toughest person I know."
Microvascular brain disease, or chronic small vessel ischemic disease, is a common condition that affects the small blood vessels in the brain, according to Health Line.
This isn't the first health trouble for Baio's wife.
In 2015, the Happy Days actor revealed on Facebook that she had been diagnosed with a brain tumor.
More recently, the Baios have made headlines for the sexual misconduct charges former Charles in Charge co-star Nicole Eggert has lodged against the actor. Baio said he and Eggert had a consensual relationship when she was 18.
The pair have been married since 2007 and share a daughter, Bailey Deluca Baio, 10.