I don't think I've welcomed you before, so welcome to HW!
In my opinion, it does not sound like depression to me at all. I would get him in to see a neurologist ASAP. Get a neuro exam to make sure nothing serious is wrong in that field. Then maybe have some blood work run. Sometimes hormonal imbalances can cause depression-like symptoms, fatigue, insomnia/somnolence, changes in appetite, changes in weight, etc. Also, certain illnesses can cause problems like that. A friend of mine caught some sort of tropical illness on a missions trip to Venezuela some years back. The symptoms didn't get really bad until 3-4 months after he returned (I think he said they combined with some other illness -- it was a long time ago, I don't really remember perfectly). He got a lot of different problems. Lastly, though I would probably try to address this first, if he is on any medications at all or over-the-counter pills, call the prescribing doctor or primary care doctor to see whether it's possible that any of the meds, or a combination of the meds could cause his symptoms........
Thank you for your words. i want to give more details about my situation, well.. his situation. He isn t taking any pills for depression. It is for the first time I see this. no, he isn t walking or speaking in his dreams and I did some non sleeping nights because of the stress his illness caused me. What we saw it is that he had some sorts of diseasess, such as back pains, head aches, heartaches and after a full examination the doctors didn t find anything. 2 weeks ago, in a moment of sincerity, he told me that he made up some illnesess, because he didn t want to give explanation for his bad mood. So this was simple. This time I am afraid that he more induced his state or fake it, as he did before with his back pains in order to finish a fight or a discussion. Am I beeing paranoia or is this really possible?