Selma Blair battling insomnia related to MS treatment

Selma Blair has updated fans on the latest facet of her battle with multiple sclerosis.

In an Instagram post early Wednesday morning, Blair, 47,  shared a photo of her bruised legs in a bathtub, with a caption explaining that she’s unable to sleep while dealing with the latest stage in her recovery.

“Insomnia. I am like a waking baby. Afraid and want to cry. I want my mom. I do. I will take a bath. And cry. The beginning is hard. I have to Remember.”

Halle Berry and Penelope Cruz were among the celebrities who left messages of support on the post.

Blair was recently discharged from the hospital, and debuted a newly shaved head on Instagram, along with her most recent MS update: “This has been a process, and will continue to be one. I am immunocompromised for [the] next three months at least. So no kisses please.”

In her recent People cover story, Blair elaborated on the support she’s received from fans and other actors. Close friend and “Cruel Intentions” co-star Sarah Michelle Gellar in particular, organized a weekly “food train” for Blair and her son Arthur, 8.