Join Date: Sep 2010
Location: Ontario, Canada
What about protein bumps?
Last year, I rode a horse that had similar bumps pop up out of nowhere. They were located on his face, back and barrel. They would start off as a hard small lump under the coat, then would grow and scab over and as a result would loose the hair on that spot. The vet diagnosed it as 'Protein Bumps'. They were resolved with a minor change in his diet. I'm not sure if they would occur in a 3 year old or not (my horse was 22 at the time), but maybe something to look into.
Good luck, and please let us know how you make out.
"No hour of life is wasted that is spent in the saddle ~ Winston Churchill"