Pancreatitis and loss of appetite: what to know

Pancreatitis is inflammation of the pancreas, an organ behind the stomach that helps digest food and regulate blood sugar. Inflammation may cause upper-abdominal pain that can spread to the back, nausea, vomiting, bloating or tenderness. These symptoms can make eating unpleasant, while the illness itself may disrupt normal digestion.

Loss of appetite is not specific to pancreatitis. Other conditions, including gastritis, gastroenteritis, peptic ulcer disease, hepatitis A, influenza, COVID-19, depression and pancreatic cancer, can also affect appetite. A symptom alone cannot identify its cause; the pattern of pain, vomiting, fever, bowel changes, medicines, alcohol use and medical history helps guide assessment.

Arrange medical advice promptly if you have new appetite loss with persistent upper-abdominal pain, repeated vomiting or a known history of pancreatitis. Until assessed, take small sips of fluid if you can keep them down. Do not force a large meal, and avoid alcohol. Ask a clinician or pharmacist before taking pain medicines, anti-nausea medicines or supplements, particularly if you have liver or kidney disease or take regular medicines.

Record when the appetite change began, what you have managed to drink and eat, whether pain travels to your back, and any fever, vomiting, pale stools or yellowing of the skin or eyes. This information can help a clinician decide whether you need examination, blood tests or imaging.

Seek urgent medical care for severe or worsening abdominal pain, pain with repeated vomiting, fainting, confusion, trouble breathing, a fast heartbeat, a swollen or very tender abdomen, or an inability to keep fluids down. These signs can indicate a serious illness or dehydration and should not be managed at home.

Prompt assessment is also needed for yellow skin or eyes, fever with shaking chills, black or bloody stools, or very little urine. If you are pregnant, have diabetes, or have previously had pancreatitis, use a lower threshold for contacting a clinician.

You could ask: What might be causing my appetite loss? Do my pain and vomiting need tests today? How should I maintain fluids and restart food? Which medicines, alcohol or foods should I avoid? What symptoms mean I should return urgently?