I have a mare that had cushings related laminitus and she had multiple abcesses, it probably took about 12 months for it to settle, she had imprint shoes and was on box rest for most of the time but could walk out into a small area if she wanted. We had an excellent farrier who regularly had to...
I would get it scanned to check, as I had a horse come in from the field hopping lame, with the same swelling and no visible injury. Like you, we initially thought foot abcess, but the farrier found nothing. By this time the leg had swollen further so the vet thought cellulitus, but I pushed for...