This is all from my personal experience, this may, or may not be what is affecting your horse. Im no veterinarian, I've just seen -allot- in my years on a boarding facility with horses constantly coming and going ^^
#1 - tb xracehorse = brought him...1yr ago maybe, from dessert and I live on the coast....since bringing him he has lost fur across his front chest...and has many small lumps that come and go...like hard lumps. Im not quite sure how to explain and I don't no what they are exactually. They remain with or without a rug, he only got them when he moved to ours. So im thinking climate...or somesthing in the paddok or something. Hmmm I will get photos for this instead to give you an idea.
Alright.. this could be some sort of weed or irritant he deals with. Do you use any harmful fly sprays? Sometimes the fly spray's with pesticides in it can actually result in allergic reaction/hair loss. My recommendation for now, would be to put some triple antibiotic (Neosporin) on the area. Triple Antibiotic ROCKS for stuff like that.
#2 - appy x tb - recently gotten lumps over one side of his rump...but you can pick them off. However they are like in his skin. I have washed these in iodine and they seem to have gone down but not disappeared. I will get photos also.
This kind of sounds like Rain Rot to me. Are they sorta greasy and clammy looking? Are they under the hair? Im having to deal with this now on my horses, since my Ex let them rot without a shelter while I was trying to get them back from him. I recommend using Betadine scrub OR Microtek spray.. Do NOT use both! Betadine scrub is much better. Do that daily, and if he begins to bald there, put cortozone cream on the area to keep it moisturized.
#3 - appy - ever since I've had him has had an eye problem...like just get gunky...not too bad but its allways sorta like sleep I guess - human equivilant. Haha I can get photos too. Heard putting cold tea with syringe in his eye can help not sure though??? No anything??? Ill get photos of this also
Whenever my gelding got a weepy eye, we bought this over the counter horse medicine called Terramyacine (sp?) it came in a tube and you applied it in the eye (on the inside of the lower lid). Appies can get really bad eyes, I've known many to go blind =/ And as Kristy said, I wouldnt recommend the Tea thing ^^;;;
#4 - thoroughbred - has like on his hind heels, sores or some sort getting photos!!!
Not much detail on this one, haha! Anyways, it can be as simple as he stepped on debris and has an infection, or as severe as heel avulsion. This happened to my filly and it absolutely sucks. I can't really give any thought on this horse, because the description is pretty vague. Here are pictures of what my Filly's heel avulsion looked like:
When I discovered it: http://i80.photobucket.com/albums/j1...in/abcess1.jpg http://i80.photobucket.com/albums/j1...in/abcess2.jpg
The day the vet resected it: http://i80.photobucket.com/albums/j1...favulsion1.jpg http://i80.photobucket.com/albums/j1...favulsion2.jpg
(yes, there are gnats in the wound, it was summer and they were vicious.. but worry not! Iodine and epsom salts drove em off ;D)
Pictures of your guys would help greatly =) And perhaps you should consider calling your vet out. For an examination and recommendation of treatment, they wont charge that much, I don't think. Call your vet and talk to them.. ask them if they could come out and give you an evaluation =)
And my advice is strictly an opinion based on the problems you described coupled with my personal experience.. and im not a vet! Haha!
Good luck! And Welcome!