I'll just give a little update on how he's doing. He had the MRI 2 weeks ago and was prescribed gabapentin and prednisone after being diagnosed with CM/SM and PSOM. It seems that the PSOM may be the most severe of his issues. He has one small syrinx along with CM. Since then he has gradually been improving and at the moment seems norma, except for the excessive peeing! I'm aware that this is due to the prednisone. He loves taking his meds because I wrap them in a dab of peanut butter!