Son age 14 keeps complaining fatigue. It's not continuous we had it last year and all tests clear / control good. Then before Xmas but improved over holidays. Now struggling as back at school. Coincides with massive growth spurt. Complaining too tired to walk down stairs. Today was dropping things and being clumsy. Struggling make it through a day of school. I know a child with chronic fatigue but his got worse and worse whereas my sons seems to come and go. Could it just be the strain of puberty on an already compromised system? Have other parents noticed fatigue with growth spurts being an issue. His BG is a bit high (mainly growth hormone at night peaks) but it's not terrible and doesn't explain the extreme fatigue.