Gastroparesis is a chronic condition characterized by the inability of the stomach to fully empty. Symptoms can include nausea, upset stomach, bloating, gas, acid reflux, irregular blood sugar levels, and a constant sensation of fullness making it difficult for someone to eat a complete meal. Long-term effects of gastroparesis can include unintended weight loss, nutritional deficiencies, dehydration, and the development of masses in the small intestines called bezoars, which are essentially little pockets of undigested food that cannot make their way through the digestive system.