horse walking in circles

Question
today found our horse laid down, couldn't hardly pick up his head.  He finally got up but stumbles a lot.  When we were walking him back to his stall he would walk in circles the whole way, and tilt his head inward as he walked in circles.  What could be wrong.  He is about 23 years old

Answer
Hi Anna,
           I just saw this in the question pool and wanted to answer it. There are several things that your horse could have including EPM. If you have not already done it, then you should get him to the Vet.

Please let me know what happens.

Lisa