I don't *think* they're bird catcher spots but....what are they??
A boarder at my farm has a grey horse, who has greyed out and is now mostly white in color, slightly flea bitten on his shoulders. He has started getting these pink spots all over his body.
At first you could only see them when he was really wet. Now you can pretty much see them all the time. I just body clipped him for her and was surprised to see them again, because they used to only show up in the summer, and then go away in the winter even when he was clipped. They range in size from a nickel to a quarter.
She had assumed that they were birdcatcher spots, but in my research, I haven't been able to find anything about grey horses with pink spots (as in his skin is pink, instead of black in these spots). It's like a loss of pigmentation in polka dot form. Birdcatcher spots seem to be more of the hair turning white in spots, not necessarily the skin (I could be wrong though).
Nope, everywhere else his skin is black. He was born black, not rose grey from the pictures i've seen of him as a foal and has slowly turned from black, to dapple grey, to grey, to flea-bitten, and now flea bitten and polka dotted.
YES! That is exactly it! Finally! Should she be worried about this? Does it create any health concerns? We assumed it was from the sun, since they seemed to mostly appear in the summer so we were going nuts keeping him in out of the sun and always using a fly sheet and fly mask. Now I'm thinking that maybe they were just more apparent in the summer because his coat is shorter. Any link to depigmentation and melanoma?