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Dr. Andy
Dr. Andy, Medical Director
Category: Dog Veterinary
Satisfied Customers: 30036
Experience:  UC Davis graduate, emphasis in dermatology, internal medicine, pain management
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My dog has become lethargic after his eye became red and swollen.

Customer Question

My dog has become lethargic after his eye became red and swollen. Vet said it's allergies, but this going on a month and I'm worried
Submitted: 2 years ago.
Category: Dog Veterinary
Expert:  Dr. Andy replied 2 years ago.
I am sorry to hear about this concern.
Expert:  Dr. Andy replied 2 years ago.
Hello, Allergies, routine allergies, do not cause redness and swelling. That sounds more like a hypersensitivity reaction. For example, from an insect bite or sting, recent vaccination, etc...Certainly, if your pet has other common allergy symptoms like skin infections, ear problems, or licking the feet a lot, allergies are likely also present. But, uncommon for regular allergies to cause a persistent eye issue this bad.
Expert:  Dr. Andy replied 2 years ago.
Absolutely, he needs to be re-evaluated. I do not doubt he should be put on a course of anti-inflammatory medication (like prednisone). Not just a shot that wears off quickly, but some oral streoids. Great for allergies, and would reduce that swelling. Plus, some type of eye drops to help out as well.I can't say your vet is wrong, but routine allergies don't tend to cause bad eye issues. Allergies "usually" cause skin issues, ear problems, and a lot of scratching or licking.
Expert:  Dr. Andy replied 2 years ago.
It does make sense to suspect allergies based on the duration, but surprised that you would visualize any form of swelling and chronic irritation over that period. A vet should also likely recommend a simple eye stain test to ensure the cornea of the eye is okay.
Expert:  Dr. Andy replied 2 years ago.
Benadryl can be given at a dose of 1mg per pound of body weight. Keep in mind, Benadryl tablets and liquids come in different sizes. So, an approximately 25 pound dog can get a full 25mg tablet or a half of a 50mg tablet. I usually avoid the liquid Benadryl in larger dogs (you would have to give too much of it). You can give Benadryl every 8-12 hours. Another favorite for dermatologists is Zyrtec (cetirizine) over the counter. Available in 5mg or 10mg tablets. A small dog 10-20 pounds can get a 5mg tablet once a day in the morning, but can be given every 12 hours. Any dog over 30 pounds, I typically recommend the 10mg tablet every 24 hours (or twice a day).
Expert:  Dr. Andy replied 2 years ago.
A antihistamine might help a little bit, but I ulitmately think a recheck visit or getting a second opinion is now well worth it. Good Luck!Dr. Andy
Expert:  Dr. Andy replied 2 years ago.
Hi,

I'm just following up on our conversation about Robby. How is everything going?

Dr. Andy