Months 2-4 both arms felt like severe carpal tunnel. Fell asleep constantly couldn't type, play video games, bang my wife, etc... Finally went away, but it was a major problem. Using 3 iu's a day Somatropin. Going on 6 months.
You can get the swelling if you go over a certain amount of dose -- depends on the person -- but when u start getting 4-6iu then you can start to feel it.
You should read the post Ulter was referring to where they did a study on this. It's a good read IMO and is what I'm doing b/c of going longer than 6 mos.