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Quick history: Got Rocky in March from Delaware Valley GR Rescue. He was 2 years old with a history of food alergies. First 2 1/2 months were pure hell with full body hives and multiple skin infections. Many trips to the vet and dermatologist. Got him on NB Sweet Potato and Fish and, like magic, Rocky became symptom free in less than one week. After 2+ months, I switched to NV Rabbit to increase protein and reduce carbs. Rocky continued to do great for another 2+ months. Took Rocky with us to the beach for a week. The day before we came home (one day after giving him his monthly Advantix) Rocky was scratching his ear. Turned over the flap and found a flea. Next day we found a second flea on him but it was almost dead. Came home. Could not find any evidence of more fleas but Rocky started biting and scratching. Not nearly as bad as when we first got him, but enough to concern me. Gave him a nice shampoo with Hylyt which seemed to help a little (probably wishful thinking). Grasping at straws I put him back on NB Sweet Potato and Fish last Saturday. He seemed to be scratching/biting a little less each day but this morning, I found the beginnings of pyoderma on his belly. It has been 3 weeks since we came home from the beach.
Off to the vet for antibiotics. I see 3 possibilities:
1. Rocky coincidentally developed a sensitivity/allergy to his NV Rabbit formula coincidentally with the beach visit.
2. Rocky is having a delayed reaction to the stress of the trip and/or an exposure to an allergen at the beach.
3. Rocky picked-up some parasite at the beach which isn't being killed by his Advantix.
Even if #1 is true, I find it hard to believe he is now also allergic to NB Sweet Potato and Fish. Assuming he isn't allergic to NB SP&F, why is the pyoderma showing up 5 days after I switched him back to it?
This is a major set-back.
Off to the vet for antibiotics. I see 3 possibilities:
1. Rocky coincidentally developed a sensitivity/allergy to his NV Rabbit formula coincidentally with the beach visit.
2. Rocky is having a delayed reaction to the stress of the trip and/or an exposure to an allergen at the beach.
3. Rocky picked-up some parasite at the beach which isn't being killed by his Advantix.
Even if #1 is true, I find it hard to believe he is now also allergic to NB Sweet Potato and Fish. Assuming he isn't allergic to NB SP&F, why is the pyoderma showing up 5 days after I switched him back to it?
This is a major set-back.