Not to be pedantic, but high blood sugar symptoms are more like lethargy, constant thirst, frequent urination, irritability, and at a certain point, straight to coma as the blood turns too acidic (DKA). Nothing as exciting as seizures in there.

Only because having been around a few people who were diagnosed as adults, and these very basic symptoms were overlooked, so the more people aware of them, hopefully the less people that need to visit the ICU for DKA