We've finally had some success with Butter's allergies – wiping his face, belly, legs, pads & between his toes after he goes for a walk in the field. It's been a long haul and he'd been reacting to fungi and plants in the aster family (ragweed, etc...). Because he'd eat grass, sniff it, and walk through it, he'd have terrible reactions and the "little" bumps under his coat started turning into bigger bumps.
All set for now. If an elimination diet hasn't helped with the bumps, it could be an allergy to something in the environment -- try wiping Hotep down after she's been out and see if it helps.