My job requires lot of typing, due to which my right hand's little finger is overly stretched and is in constant pain. straightening it doesn't help.

Typing and Griping: The Bible says something like"If thine eye offend thee, pluck it out."Thank God it doesn't say anything about fingers! This has been the age of repetitive stress. I see so many people who, doing the same or similar repetitive motions, suffer the inconveniences of strains & pains. Before it gets really bad, ask to have your work station reviewed ergonomically and ask to see a hand physical therapist.