Jericho's Jamie-Lynn Sigler reveals 10-year-old son has rare autoimmune disease

Jericho-raised actor and podcast co-host Jamie-Lynn Sigler, who has long been public about living with multiple sclerosis, said Tuesday that her and her husband Cutter Dykstra’s elder son, Beau, has been diagnosed with the rare autoimmune disease acute disseminated encephalomyelitis.

A widespread inflammation of the brain and spinal cord, ADEM can cause any of a variety of neurological symptoms such as seizures, weakness of the limbs, vision loss and changes in mental state, according to the National Organization for Rare Disorders.

Sigler, 43, wrote on Instagram Tuesday that  Beau, who turns 11 this month, had had what “seemed like a normal virus” that four weeks ago “turned into a nightmare. Beau has what we believe to be ADEM. To say this has been hard is an understatement, and I’ve never felt more broken.”

But, added Sigler, who played daughter Meadow on HBO’s 1999—2007 mob-family drama “The Sopranos,” “I have also never felt more love. The way our friends and family have come to our rescue during this terrible time has been one of the most incredible things to experience.”

Sigler — who additionally discussed Beau’s condition with her “MeSsy” podcast co-host, actor Christina Applegate, on its Aug. 2 edition — went on to write, “The power of love, community and prayer is so real. While we are still very much in it, I am left with so many questions and uncertainty. I was held by one of my dearest, Christina, as I decided to share what we’ve been going through on this weeks @messypodcast, for many reasons.”

Among them is that, “As a mother … I needed to get this story out of my head to understand it’s not a dream, that’s it’s real, and I am also just desperate for advice and information. If anyone has had experience with ADEM, I would love to hear from you.”

Sigler, most recently a star of the ABC crime drama “Big Sky,” thanked the medical personnel who have given her the “highest of hopes for our son that he makes a full recovery,” though she cautioned that remains uncertain.

She also thanked her husband, Manhasset-born former baseball player Cutter Dykstra, son of retired Mets player Lenny Dykstra, and “our other son Jack[;] while you are only 6, the way you just ‘got it’ and turned into a care taker for your brother with each hospital visit reminds me of the beauty in this world.”