In Chinese medicine there are a couple of different patterns that can lead to seizures. If you consistently are experiencing them in the springtime that suggests at least some element of wind.
Wind-stroke is a common pattern involving seizures. Basically the idea is that small amounts of wind can slowly accumulate and this can occur without any signs or symptoms. At some point, as the accumulation reaches a tipping point that trapped wind is released, which gusts through the body and temporarily blocks the flow of the energy. This results in seizures and/or stroke like symptoms. This would be treated very differently from energy blockage due to phlegm and/or damp accumulation.
You're best bet is to find a local practitioner and work with them. Acupuncture can be extremely effective in reducing or even eliminating the occurrence of seizures.