Selma Blair reveals bald head as she undergoes radical treatment for MS that will leave her immune system compromised for three months
- The 47-year-old actress was diagnosed with the disease last August
- In the past few weeks, Blair said she has hair loss and her son cut her hair
- On Thursday, Blair posted the first picture of her shaved head
- She said she has had a treatment that went 'brilliantly' and has left her immunocompromised
Selma Blair has revealed she has shaved her head and undergone a radical procedure to treat her multiple sclerosis.
The 47-year-old actress was diagnosed with the disease last August, after years thinking she was dropping things and tripping up because she was 'clumsy', and was soon walking with a cane, then a walking bike.
On Thursday, Blair posted a photo on Instagram from inside a clinic, with a bald head, leaning on her walking bike, with a lengthy caption, including: '#newimmunesystem'.
Blair did not stipulate what kind of treatment she received for MS, for which there are many therapies, including injectable, oral, and infusion therapies.
Days earlier, she posted a photo of her son cutting her hair, a month after posting then deleting a photo of her son with a razor, and telling PEOPLE she is suffering hair loss.
While MS does not cause hair loss, it is a common side effect of many MS treatments, including Aubagio, a daily pill.

On Thursday, Blair posted a photo on Instagram from inside a clinic, with a bald head, leaning on her walking bike, and the words: '#newimmunesystem'

Days earlier, she posted a photo of her son cutting her hair
'Today is a banner day,' Blair wrote.
'I am being discharged from the care of an incredible team of nurses and techs and a visionary Dr. who believes in my healing as much as I do. This has been a process. And will continue to be one. I am immunocompromised for next three months at least. So no kisses please. I wanted to make sure all complications here were my private space. And we got through brilliantly.'
Blair declined to go into detail about the treatment, saying she will 'when I am ready.'
She has always been incredibly open about her health, sharing her battle with post-partum hair loss in 2011.
It was no different after her MS diagnosis last summer.
Multiple sclerosis (known as MS) is an incurable, life-long neurological condition in which the immune system attacks the body and causes nerve damage to the brain and spinal cord.
Symptoms can be mild in some, and in others more extreme causing severe disability, particularly in those diagnosed late.
If caught early, a weekly shot or daily pill can keep the condition under control, and often prevent severe disability down the line.
In an interview with PEOPLE this week, Blair said that, once she was diagnosed, her symptoms came on hard and fast.
She has palsy in her face, that impacts her control of her facial muscles, and a condition called spasmodic dysphonia, which makes her voice tremble.
'It’s constant weakness and fatigue,' Blair said.

Blair has been open about her battle with MS since her diagnosis last August
- Selma Blair on Instagram: “Today is a banner day. I am being discharged from the care of an incredible team of nurses and techs and a visionary Dr. who believes in my…”
- Selma Blair on Instagram: “I slept two hours. There is a pain. In my head. In my throat where the tears start. I want to smell him. Tell him I am so proud of him.…”
- | PEOPLE.com