Creative kid symptoms and conditions

My 12 year old son has been on 60 mg of Prednisone for two weeks now. His side effects have not been bad at all up to this point. He's gained about 6 pounds. His brain is unusually active right after taking the drug, and this effects lasts a few hours. He's always been a wildly creative kid but prednisone seems to intensify is creativity and the productivity of his brain. He has Tourette Syndrome and his tics waned overnight after beginning the meds so that is a big bonus if prednisone is responsible for that. He has always been an insomniac since he was a baby but prednisone makes him sleepy, so sleepy he takes naps during the day and goes to bed early, sleeping soundly all night, so soundly he had an accident and wet his bed last night. His head sweats when he sleeps. He has infrequent periods of mild irritability. His appetite has increased but not unnaturally so. Seems like he finally has a sustained healthy appetite. He goes to 45 mg for two weeks tomorrow so I'm interested to see what new side effects this brings on. No stomach problems despite taking this along with very high doses of antibiotic. Maybe the prevacid he takes with Lactobacillus is helping with that and the fact that he takes his meds with small meals or lots of fluid.