I've been googling to find out what is wrong with my wrist and this seems similar. I injured it July 2010, I don't know how I injured myself as well. I was placed in an orthopedic wrist brace for 2 months. I've seen an ortho, had Wikipedia reference-linkMRI and had some type of shock test to rule out carpal tunnel and doctor says everything is fine.
But almost 1 year later I'm still in pain! The only other thing I suffer from is reynolds phenomenon in both hands. Wrist clicks as well and randomly likes to get real red/hot with extreme pain.