Yes, he should see a doctor to be properly diagnosed. But in the meantime, there is a herbal supplement that my mom takes for Joint pain. It also has a lot of beneficial herbs that is beneficial to the body especially an aging body. It works wonders on my mom who is 68. She can move around a lot now and has gone back to gardening. Give it a shot. Its the Extreme Joint formula at http://devoted.to/herbal
My mom took a lot of prescription pills which masqueraded one problem and caused another. Since going all natural/herbal, she is doing sooo much better. She says she will never see another doctor again and will continue taking her herbs. I guess the chemicals from medicines has hurt her body and just hid the pain. Herbs are truly Natures mIracle. I would also suggest seeing a herbalist before seeing a doctor that will just give him harmful chemicals as medicine.
Take care
sorry...
the bruising and the night sweats can also be symptoms. Has he been tested for viral hepatitis? I'd have him tested for hep b and c too.
I think he needs to see the doctor. Has he had his liver checked? I'd get a CBC and a full liver panel. It's a start anyway. Itching, fatigue, nausea all can be associated with the liver.