My dear departed Dalmation, Zoe, also had mild, but noticeable, seizures, and she had them several times a day. We took her to the vet and he said it was common in Dals. He also suggested not medicating her unless it interfered with her life. He called it 'ideopathic epilepsy', which just means "cause unknown". We didn't get any tests done, so, of course, the cause was unknown. Tests were big bucks and the Vet suggested that we take a wait and see approach. So we did.
Zoe never seemed to notice the seizures; it certainly didn't cramp her style in any way. I think she got 'caught' on the steps several times, as we would hear her fall down the last few steps. We only had 7 steps, so it wasn't a long fall and never hurt her. In any event, the steps were unavoidable and she was too big to carry up the steps without getting a hernia!