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Dr. B.
Dr. B., Veterinarian
Category: Dog
Satisfied Customers: 20620
Experience:  Hello, I am a small animal veterinarian and am happy to discuss any concerns & questions you have on any species.
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I have a 2 year old st. Bernard. Just diagnosed with

Customer Question

I have a 2 year old st. Bernard. Just diagnosed with epilepsy. Within one week of beginning phenobarbital we have seen a significant vision loss. Her behavior is changed, lethargic and flat affect. Should I be concerned it will not go back to normal or be looking for a brain tumor?
Submitted: 1 year ago.
Category: Dog
Expert:  Dr. B. replied 1 year ago.
Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you with today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your wee one’s situation, and wanted to help.
In this situation, I would be concerned and strongly advise a recheck as soon as possible. We would not expect vision issues secondary to the medication. Instead, this raises concerns that there may be something pressing on the brain or increasing the pressure on the brain within the skull. And as you noted a tumor is a concern but we can also see these same signs with infectious issues, (ie bacterial, protozoal, viral), hematomas or soft tissue inflammation (from head trauma), parasitic cysts, and even with some systemic or toxic issues.
Therefore, in this case and with her deterioration, it is advisable to have her seen, reassessed, and potentially even discuss further brain imaging (ie MRI) if this has not been done already.
Please take care,
Dr. B.