obstructive sleep apnea/hypopnea syndrome
"I have been using Nuvigil for 4 days now.  I have horrible headaches!  My eyes ache and feel like someone is pushing in on them and I want to close them and feel very tired, but not sleepy.  I am irritable, but I think that is because I feel so horrible.  My Doctor prescribed 150mg and said to cut them in half.  I think I will try taking 1/4 of a tablet and see what happens.  I am not sure if I can handle much more.  I can't focus at work by late afternoon because my head hurts and my eyes are aching. Ibuprofen and Tylenol don't seem to help."