In a brutally honest post on Instagram, actor Selma Blair has announced that she's been diagnosed with Multiple Sclerosis and most likely had it for the past decade and a half.

Blair, who most recently had a cameo in Netflix's 'Lost In Space' and is due to star in another Netflix original 'Another Life', explained that she was diagnosed with the illness just two months ago, but believes it's possible she's had it for over 15 years and simply ignored the symptoms.

 
 
 
 
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I was in this wardrobe fitting two days ago. And I am in the deepest gratitude. So profound, it is, I have decided to share. The brilliant costumer #Allisaswanson not only designs the pieces #harperglass will wear on this new #Netflix show , but she carefully gets my legs in my pants, pulls my tops over my head, buttons my coats and offers her shoulder to steady myself. I have #multiplesclerosis . I am in an exacerbation. By the grace of the lord, and will power and the understanding producers at Netflix , I have a job. A wonderful job. I am disabled. I fall sometimes. I drop things. My memory is foggy. And my left side is asking for directions from a broken gps. But we are doing it . And I laugh and I don’t know exactly what I will do precisely but I will do my best. Since my diagnosis at ten thirty pm on The night of August 16, I have had love and support from my friends , especially @jaime_king @sarahmgellar @realfreddieprinze @tarasubkoff @noah.d.newman . My producers #noreenhalpern who assured me that everyone has something. #chrisregina #aaronmartin and every crew member... thank you. I am in the thick of it but I hope to give some hope to others. And even to myself. You can’t get help unless you ask. It can be overwhelming in the beginning. You want to sleep. You always want to sleep. So I don’t have answers. You see, I want to sleep. But I am a forthcoming person and I want my life to be full somehow. I want to play with my son again. I want to walk down the street and ride my horse. I have MS and I am ok. But if you see me , dropping crap all over the street, feel free to help me pick it up. It takes a whole day for me alone. Thank you and may we all know good days amongst the challenges. And the biggest thanks to @elizberkley who forced me to see her brother #drjasonberkley who gave me this diagnosis after finding lesions on that mri. I have had symptoms for years but was never taken seriously until I fell down in front of him trying to sort out what I thought was a pinched nerve. I have probably had this incurable disease for 15 years at least. And I am relieved to at least know. And share. 🖤 my instagram family... you know who you are.

A post shared by Selma Blair (@selmablair) on

"I fall sometimes. I drop things. My memory is foggy. And my left side is asking for directions from a broken gps. But we are doing it," Blair said. She went on, thanking her friends and fellow actors Sarah Michelle Gellar, Jaime King, Freddie Prinze Jr., and others for support, admitting that she is "in the thick of it but I hope to give some hope to others. And even to myself."

The illness, which currently effects 2.3 million people worldwide and over 9 thousand people here in Ireland, is described the MS Society of Ireland as "a progressive neurological condition" that affects the brain and spinal cord.

For more information on MS or to help someone you know diagnosed with MS, please visit the MS Society of Ireland's website and consider donation.