An article talked about the connection between ADHD, sleep-disordered breathing, and mouth breathing helped connect the dots for one mom, reports Yahoo.

“The connection — it was really a lot of luck,” Yazdani tells Yahoo Lifestyle. “I had suspicions that something was not right with Kian. In addition to the escalating behavior problems, he had dark under-eye circles, despite a strict bedtime of 7:30 p.m. every night. I was in the process of ruling [out] whatever I could.”