I have a medical question: Is this tendinitis, carpel tunnel or what?

So today my girlfriend tells me that she has these pains and she doesn't quite no WHAT it is or how to fix the issue or ease the pain. She says simplest things get to her such as pulling up her blanket, closing the doorknob, or pumping hand soap. Its a very painful stinging pain problem extending from her wrist to the palm of her hand. We were thinking its like tendinitis or carpel tunnel and we have no idea when or how it happened. The pain is on and off but its very painful, and she needs help. What to do...