I'm a very experienced horse owner (inc drafts) and have encountered many cases of mud fever/leg mites before, some which had become very advanced as had been left untreated.
I've recently rescued a Belgian Draft horse and have noticed that she has some leg issues and would really appreciate some advice as I'm stumped!
When I inspected her legs it became apparent that they had not been groomed or cared for at all (it's July and she had lots of dead winter coat all over her legs where her previous owner was clearly nervous of her!) Her feathers were also in a state. Her rear legs, whilst showing some signs of having had mud fever at some point were fine. Scurfy but nothing more than to be expected due to lack of grooming. Her front legs however are extremely scurfy and one in particularly has what I initially thought was mud fever that had been left untreated. As she isn't happy having her legs examined (something which we've made massive progress on in just a few days) I left it at a small examination that first day and I went back to inspect closer the next day and have noticed that just above the hoof, on one leg only she has some large lumps. She's in absolutely no pain or discomfort (I did the check whilst eating test to see if she's still nervous and she doesn't even flinch) with this which I find odd and it doesn't look, to me like it could be the remains of mud fever. She isn't lame either. She does have ridiculously over grown, split chestnuts (which my farrier will be addressing) and they look like they've started to turn in but aren't embedded. One of these lumps is in the region of the lower chestnut.
Does anyone have any experience of this at all or what it may be? I was wondering if it was likely it could just be a build up of grease/dead hair or something aggravated by the chestnuts and caused by the complete lack of grooming she's had. She's also underweight and I believe hasn't been getting the correct nutrition for some time.
Thanks in advance :)