There were no hand cymbals or sequined harem pants, and no Middle Eastern music was playing in the background. And yet the rhythmic, wavy movements of an Iraqi woman's abdominal wall muscles resembled ...

Diaphragm flutter — also known as diaphragmatic flutter or diaphragmatic myoclonus — is a rare disorder in which your diaphragm experiences repeated involuntary contractions. The diaphragm is a muscle ...