So my horse (Arab) started to lose hair at the base of both ears near the poll. The spots were symmetrical. I asked mom and she just figured he was shedding. I didn't agree. So I kept an eye on it... got worse but not severe. There was then a new set of spots on both sides of the shoulder/neck, again symmetrical. So I knew something was wrong. His rich color was washed out and grungy, his face looked almost dirty and wasn't the least bit dusty. So my trainer looked at it and thought it could be a bacteria, rain rot. I tried a vetricyl spray and it is now cleared up 2 weeks later. His face lost some hair as well.
I figure that it was from not drying properly after the first bath at the nicest week after winter was clearly long gone. I treated the bath as usually and he dried an a good breeze and warm sun.
Well the question behind all of this... can rain rot 1) be transferred from horse to horse? (we only have 3) and 2) Will this come back even if he dries properly?
How else can I take care of rain rot?