Question
I'm not sure what type of arthritis I have.  My right thumb has a big bone sticking out from the side.  It is very painful to touch.  I can't open cans or bottle too well.  It swells often and I get pain throughout the day.  At times, it is very difficult to use a pen or pencil.

Answer
Cynthia,

Have you seen a doctor about this? It not you should. If it is arthritis and is affecting only one joint then it is most likely osteoarthritis. It could also be a bone fracture or there are other possibilities.

I wish you well.

Rusty
http://arthritis-symptom.com