That's what I am saying--when my dogs had seizures, the vet never asked about flea and tick meds. I called the vet a week later after the first dog's seizure and asked if that should be a concern 'oh yes stop giving that to your dog!!!' This time I didn't even ask, just stopped giving it after the first seizure but it was never brought up by the vet (I didn't mention it as we board there and didn't want to get banned for not giving flea and tick!). The neurologist is the only one who asked about it. She was amazing! I learned so much. The vet had said she doesn't see seizures but maybe once a month while the neurologist has been working with the things for 30 years. I regret not going sooner. This week will be week 2 since last seizure, but she did say the new dose could take 2-3 weeks to settle in her system. It seems like she was getting them every other Wednesday like clockwork.
Signs of neurological: head tilt, loss of coordination, major behavior changes, blindness, appetite issues etc. There are a lot. She checked her reflexes and pupils too. Interesting for me is when my old dog had a seizure she had a major head tilt and loss of coordination for a couple of months after. One day, she was just herself and lived another three years (no seizures). I had been having to carry her up and down the stairs she was so bad. Then boom! Running up and down the stairs again.
The neurologist did also add that seeing that my dog was in perfect health now 9 months after her first seizure, that also helped her pretty much rule out everything but epilepsy.