I went out to see my horse today and took of his rug and one of his shoulders (his right) he had all these little lumps under the the hair. It covered his whole shoulder and a little of his neck. He has a bit of rubbing on his chest (rug) and in that area it looked kind of like dry skin, greyish, almost like flaking off, but still bumpy. The lumps almost feel scabby? Like that hard, rough feeling.
He's on the same feed as normal. He was moved into a new paddock about 4 days ago, but he's been in there before (they move every week) and I believe the property has the same grass in all the paddocks (its a small place). I don't know how long he's had it. I check him everyday but the last two days its been raining A LOT. He's had a rug (no neck rug - too warm) on, and I've checked under that he was dry and fed him, but haven't unrugged him for two days. Three days ago he did not have it. I was thinking maybe it could have something to do with the rain because it did seep down to his shoulder through the neck opening. There are no irritants in his rug. He's eating fine and acting normal, I don't think this is worth a vet call unless it doesn't go away soon, or worsens, but I would really like some opinions.
When I got him the owner said he had previously had rainscald. Could this be that? I hear its somewhat common but I've never experienced it first hand. If anyone has ideas of what it could be and how to fix it I would to love to hear them.
I'm putting a video on of the lumps. I would have taken pictures but I only had my Ipod and it only takes videos. The first 20 secs are of the lumps, the rest of it is me being incompetent. Sorry about video quality.