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My 15 year old dog just had a seizure first time.What can cause that at this age?S…

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My 15 year old dog...
My 15 year old dog just had a seizure for the first time.What can cause that at this age?She has been consuming a lot of water and seems to have a dry mouth.
Submitted: 3 years ago.Category: Dog Veterinary
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Answered in 36 minutes by:
6/9/2015
Dog Veterinarian: Dr. Michael Salkin, Veterinarian replied 3 years ago
Dr. Michael Salkin
Dr. Michael Salkin, Veterinarian
Category: Dog Veterinary
Satisfied Customers: 34,328
Experience: University of California at Davis graduate veterinarian with 45 years of experience
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Aloha! You're speaking to Dr. Michael Salkin
An intracranial (within the skull) etiology such as brain tumor at 15 years of age is most likely. A tumor affecting the hypothalamus might cause the polydipsia (increased thirst) you're seeing.
There are extracranial (outside the skull) etiologies to consider as well. For example, a poorly functioning liver can intoxicate the brain (hepatoencephalopathy) and also cause polydipsia. Polydipsia is also seen with diabetes mellitus, Cushing's disease, urinary tract infection involving the kidneys, hypercalcemia (increased serum calcium level), electrolyte imbalances in sodium and potassium, and Addison's disease and when any of those diseases is severe, seizures can arise.
Cheyenne's vet can perform diagnostics in the form of blood and urine tests in an attempt to discover an extracranial disorder that might be addressed in a conservative manner. Intracranial disorders require MRI - advanced imaging inappropriate for a dog of Cheyenne's age. Please respond with further questions or concerns if you wish.
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