Obstructive sleep apnea affects 18 million Americans, which causes frequent breathing disruptions. Contrary to what you might believe, it doesn’t just affect adults. 7% to 9% of children have a sleep-related breathing disorder, like sleep apnea; however, up to 90% of cases aren’t diagnosed because symptoms can be subtle. Here’s how to spot the signs of childhood sleep apnea, so your little one can sleep peacefully.