Are you eating less than you had been? Usually, as less one eats, less sleep it usually has.

BTW, your report is terrifying... just some days ago i had read that sleep deprivation was one of the techniques used in prisions and that it was considered a torture... when i did read that i couldnt figure why it was so, but after reading your report i understand it very well...

Have you considered drinking some "natural" thing like some calming tea (chamomile for example) or passion fruit juice? Surely they are far better than medicine, and way cheaper too.

Anyway, i (being almost a sleep addict) sincerely hope you solve it as soon as possible, as i can imagine how awful it must be to be sleepless for long...