unexplicable kidney and bladder problems

[preston499]

My boyfriend is 36 and had a kidney stone a couple of years ago. He has had cystitis symptoms (stinging pain when urinating, pain under belly button, need to urinate, but only managing a dribble, nausea, sickness) for over a year, but when tested for it, his GP found that it wasn't cystitis. He was referred to a urologist in hospital who examined him and said he would need a camera and an xray. A week before these procedures, he had severe lower abdominal pain and felt like he had extreme flu symptoms. We took him to A&E where his prostate, blood and urine was examined (some blood and protein in urine, but no infection) and he was sent home the next day with pain killers and anti biotrics for prostatitis. He still felt as terrible and a day later developed severe Kidney pain as well as the previous symptoms. An A&E GP who looked at his xray said there were 3 visible kidney stones and he was sent to a ward. The surgical consultant examined him and took bloods and urine samples and was adamant that he still had prostatitis and that the "stones" were calcium build ups. He has stayed in hospital where his blood and urine is tested as well as blood pressure.  He had a urine flow test and an ultrasound which have shown no other abnormalities. He now has waves of pain and severe nausea etc.  The waves begin with feeling like he has very bad flu, then, despite drinking water and feeling that he will wet himself, he cannot urinate, the kidney pain gets worse and his temperature peaks. After around 20-45 minutes he urinates very little with great difficulty. This urine, when tested, normally shows signs of blood or protein in it. Later when he urinates, samples have very little protein and blood in them and his temperature is normal. He has been given paracetamol on a drip to bring his temperature down and is given antibiotics for the prostatitis and, apart from liquid morphene, other painkillers make him feel even more sick.
There is evidently something more than prostatitis causing his symptoms, but he is now awaiting a CT scan to explore further diagnosis. It sounds as though he has something that blocks his urine flow in waves and when the urine is blocked, it picks up blood and protein, causes more pain, nausea and a peak in temperature, then something allows it to pass for a while, which lowers the levels of blood and protein in the urine and brings the pain and nausea down to a more tolerable level.  What could be the problem??