List of Gastrointestinal manifestations in Polymyositis

Dysphagia is difficulty or discomfort in swallowing, as a symptom of disease. 

Odynophagia is pain on swallowing food and fluids that can be felt in the mouth, throat, or esophagus. 

Nasal regurgitation - during swallowing, the soft palate and the uvula move to close off the nasopharynx, preventing food from entering the nasal cavity. When this fails, it is called nasal regurgitation.

Reflux esophagitis is a condition where stomach contents come back up into the esophagus resulting in either symptoms or complications.

Abdominal bloating is a condition in which the belly (abdomen) feels full and tight. 

Constipation is a condition in which bowel movements occur less often than usual or consist of hard, dry stools that are painful or difficult to pass.

FROM MEDSCAPE