Hi there. My 3 year old daughter has now had 5 febrile seizures, starting at 16 months. We have had paramedics/ambulance rides on 2 of those occasions (the 1st time when I didn't know what was happening, and the 3rd time when I found her lying still by our dining room table! I thought she had broken her neck falling off a chair...) The seizures happen when her temperature rises rapidly, not just from a high fever.
Between the ER doctors, primary care doctor, and pediatric neurologist we have been told many different things. We have heard she will grow out of them by 5years, that she may have them until she's a teenager, that she can be at a slightly increased risk for seizure disorder if she has more than 4 febrile seizures etc. Confusing! Although febrile seizure is not rare, I think that it is different for every child.
She did have an EEG and CT-Scan after the 2nd seizure, and it really put our minds at ease. We have received good medical advice on how to respond to the seizures... Lay her on her side, time the seizure (if it lasts 5 minutes call 911, if she is not breathing call 911) After the seizure subsides, treat the fever with acetaminophen and ibuprofen (talk to your doctor about proper dosing by weight and scheduling of doses) and luke warm sponge bath. It is still scary, but we are calmer about it now.
One more thing... 2 of the seizures have occured after vaccinations, just like they warn of on the doctor's sheet that comes with the vaccines. If possible, I would be very watchful during the time period that seizure can occur after vaccinations. If your daughter is 2, you probably won't have to worry about this again for awhile. Our good news is that each seizure has been less severe than the previous one. I think her little brain is learning how to deal with the temperature spikes. And, just last week we had a spike (from normal to 102.5 in a matter of 10 minutes) and she DID NOT have a seizure.
You are doing a good thing trying to find out more, the more you know the more comfortable you will feel. Also, you may find it helpful to write out step by step what to do in case of a seizure so other people that take care of your daughter can read it and know what to do. Sorry this is so long, but I hope it helps!