Imagine your favorite meal. Now imagine being unable to eat it. Dysphagia is difficulty swallowing food or liquid. It can occur because of a stroke, head and neck cancer, injury or other neurological illnesses. Before treatment begins, an instrumental assessment of swallowing such as a modified barium swallow study (MBSS) or fiberoptic endoscopic evaluation of swallowing (FEES) is usually completed to determine the most appropriate treatment interventions.