Deanna, My now 13 yo daughter has NCS. She has passed out in the past but since getting the Dx and knowing when its coming we can kind of "head it off". She missed alot of school this year due to the symptoms. I didnt apply for SSI for her, my son has it for asthma, IgG deficiency,etc. He has many Dx. I dont think both kids can get it, although it would be great insurance wise. I had to apply for SSI for my son last year, it only took 4 months for the approval which is pretty good from what I heard.