need advice on a bump on my horse's neck
2 weeks ago (Tuesday 4/24) now we noticed a bump on Hunter's neck, about the size of the palm of a hand. It was not painful or hot, and he was still acting himself. We assumed it was an insect bite because oftentimes he has fairly bad reactions to them (mainly ticks). First thing I did was look for a tick or bee stinger and found nothing out of the ordinary.
That Friday (4/27) it still had not gone down so I called the vet. He was out the next Tuesday (5/1) and thought it was an abscess- it was mostly firm and soft in a "center spot." After lancing it, a little fluid drained. Vet prescribed bute and tucoprim for 3-5 days. By Friday (5/4) it had not drained at all but some of the swelling had slightly migrated towards the front of his neck, so I called the vet back and he suggested upping the bute (Hunter was on 1g/feeding and bumped him up to 2g).
This Sunday (5/6)it seemed to be getting a bit smaller, but was still fairly large. Called the vet back and he now thinks it may be a granuloma. After doing a little research and searching around the forum, I realized there's not a whole lot of information on it (at least that I can really understand).
Has anyone ever dealt with this? I'm not sure what to do.. It still is not bothering him, nor does it have any heat, it's just still fairly large and obvious and it really bothers me!
Here are a few pictures from 4/30 (last Monday). It's the bigger spot near the bottom of his neck, ignore the bump right near his mane, that's from a tick and it's gone now! I'm not sure why I can't find the pictures I took the first day I noticed it. But I will try to take some more today.
Any advice or thoughts are greatly appreciated!