Thank you for your question.
As your veterinarian may have told you, there are a few main causes of seizures:
- Toxin exposure- since she has had intermittent seizures over an extended period of time, this is not likely to be the cause in Baby's case.
- Metabolic disorders such as liver or kidney problems, diabetes mellitus
, etc. The blood work performed by your veterinary likely ruled the majority of these out. A liver problem cannot be entirely ruled out without a Bile Acids Test. This is not part of most routine blood work, so you should check with your vet to see if this test was performed. A bile acids test can determine if Baby has an acquired liver shunt, which could result in seizures.
- Idiopathic seizures- these are seizures of unknown cause, otherwise referred to as epilepsy
. It would be unusual, but not impossible, in a dog of Baby's age. However, most dogs with idiopathic seizures begin to have seizure activity between 2- 5 years of age, so it is far less likely that this is the cause of Baby's issue.
- Structural abnormality such as a brain
tumor or inflammation or swelling of or around the brain. Older dogs like Baby have a higher likelihood of a structural abnormality.
Head tilt may be due to ear
problems (inner ear infections, polyps or tumors
, inflammation or damage to the ear drum, idiopathic or old dog vestibular disease), or brain issues such as head trauma, inflammation, or brain tumors.
The short answer is yes, the seizures and the head tilt could be related. Specifically, if both are associated with some sort of structural abnormality like a tumor or inflammation like meningitis.
The MRI and/ or a CSF tap (where cerebrospinal fluid is collected and analyzed) would be the best way to determine what is going on, but these procedures are quite costly and should be weighed against her age, your financial situation, and what the long term prognosis would be.