Why Does My Child Sleep With Their Mouth Open? Causes, Warning Signs and What to Do Does your child sleep with their mouth open? Learn about common causes, warning signs, and possible effects of mouth breathing on sleep and daily health. A speech-language pathologist can assess oral function and recommend suitable therapy to support healthier breathing habits and better sleep quality in children. https://breatheworks.com/why-does-my-child-sleep-with-their-mouth-open-causes-warning-signs-and-what-to-do/