So, before Murray ODE, when it rained my horse broke out in a rash. It wasnt hot, it wasnt sore to touch. Just lumps and bumps all over him. Not like fly bites or mozzie bites because he would also have the lumps under his belly etc but he doesnt. After spraying him down with water and an anti histomene (SP?) it went down and disapeared. The lumps where where he would have got wet from the rain, then where the rain had trickled down his side and his bum. They are on the side of his neck to the opposite side where his maine over hangs, his back, and his bum, and then where the water has trickled down the side. Nothing on his legs or under his belly or on his head. its really just where the rain lands on him. I thought maybe a reaction to somthing I have used on him, but I havent used anything different apart from conditioner. But that was a good week before this. Then, again when i went to see him today, after a bit more rain, its back. Im really stumped what it is. Maybe somthing he ate in the paddock? A bite? It looks horrible, but hes not scratching it, hes not bothered by it, infact he was fine to ride. Ive never seen it on him the 6 months ive had him Does anyone have any ideas?