Something I've never seen before. I was grooming our 4.5 year old Thoroughbred and noticed a bunch of lumps/swellings under his mane on his neck. The lumps almost look like adipose fat beneath the skin. Condition thins from dorsal to ventral, and the ventral areas may be circular in shape. (I've seen ring worm in dogs/cats, and yes, even on myself, and it doesn't have the lumps around the ring like the ring worm I've seen). I tried rubbing/scratching to see what he would do, thinking they might itch, but rubbing appeared to be more irritating than comforting.
Some facts: gelding, stall kept, no recent changes in food or activity level, lumps don't appear to be anywhere but under mane, fed grass hay and alfalfa oat pellets in AM, alfalfa and alfalfa oat pellets in PM. Often given about 2 cups of carrots in AM and PM. Neighbors are not biting him and causing bite marks.
Any help/thoughts would be greatly appreciated.
Not the greatest picture.