I noticed while grooming my horse that he has developed some sort of lump that is right beside where his grith usually sits. Now this lump is hard, and a bit bigger than a pea. There is no warmth about it,but when you look close, a small amount of discharge can be seen, but no hole. It seems to be the only one on him. I have two photo`s of it, sorry since they are slightly over-exposed, it was the best I got. Now it seems to have drained a slight bit since yesterday when I checked, but it is still present and hard as if a stone be inside of it.
-additional information, it may be of help to mention that I use a neoprene cinch, but have been using it since last winter, but it has not been until just recently since this strange welt surfaced.
Any help as to perhaps what it is would be appreciated. Thank you.