I have done so much research on this topic I've worried myself sick! I thought I'd ask here because everyone is always so helpful :)
My 6YO QH Mare has had a very small recurring nose starting Friday (the 18th) then Sunday (the 20th) and again last night (the 23rd). Each time it has been a very small amount in one nostril. Last night was the worst and it dripped a few times. It does not seem to get worse after riding her (usually for 45 minutes, steady exercise). I did a ton of research and read that a small recurring nose bleed could be a sign of brain tumors, ethmoid haematoma and cancer. Since it has only happened three times (that I know of) I don't want to call a vet out yet but because of my research I have myself worried.