Insomnia n. habitual sleeplessnes; Inability to sleep.
....and I'd like to add....especially when you are extremely tired and need sleep the most...
AAAAAAAAARRRRRRRRRRRRRRRRGGGGGGGGGGGGGGG!!!!!!!!!!
....and I'd like to add....especially when you are extremely tired and need sleep the most...
AAAAAAAAARRRRRRRRRRRRRRRRGGGGGGGGGGGGGGG!!!!!!!!!!