epilepsy
"My son had a tough case of seizures, that generally occurred overnight, and we had difficulty achieving seizure control.  After exhausting many meds, a doctor told us we'd have a 3% chance of finding a medicine that would control his seizures.  The seizures started right when he turned 4, he's now 5.  Eventually the cocktail of Fycompa and oxcarbazepine did the trick;  10 months seizure free and counting.  Also interesting to note is that he and I both have a genetic variant of unknown significance on the CACNA1A gene.  I've never had seizures but he has.  He is experiencing side effects, most noticeably, he gets groggy after taking the Fycompa and oxcarbazepine before bed.  Also mood swings and behavior but part of that is being 5."