Sounds like a big relief for you and I hope things start to get better now you have some sort of explanation. It is a disgrace that these type of drugs, meant for short term or occasional use, are allowed by doctors to be used long term - often by adding them to your repeat prescription list and never reviewed. Not that I want you to get upset over something else when you are just getting over these problems, but if I were you I would enquire of your prescribing doctor how this was allowed to happen, and what procedures they are going to put in place to prevent this sort of thing happening again (to you or anyone else).