What should you know about random loss of appetite?

Appetite may dip during an infection such as Influenza, COVID-19, Gastroenteritis, or Hepatitis A, particularly when nausea, fever, altered taste, vomiting, or diarrhoea is present. Upper-abdominal irritation from Gastritis or a Peptic Ulcer can make eating uncomfortable. Depression may reduce interest in food and affect sleep, energy, or enjoyment.

A loss of appetite does not identify one condition by itself. Ongoing symptoms, unplanned weight loss, early fullness, persistent pain, yellowing of the skin, or repeated vomiting need a clinician's review. Less common but serious illnesses, including Pancreatic Cancer, can present with appetite change among other features; this symptom alone is not a diagnosis.

Keep a brief record of when the change began, what you manage to eat and drink, medicines or supplements, bowel symptoms, pain, fever, and any weight change. Try small, frequent meals with familiar foods, and choose nourishing drinks if solid food is difficult. Sip fluids regularly unless a clinician has told you to restrict them.

Arrange a GP appointment if appetite does not return, keeps worsening, or is affecting your strength or daily activities. Bring the symptom timeline and a list of medicines; the clinician may examine you and decide whether blood tests or other checks are appropriate.

Seek urgent medical help for severe or worsening abdominal pain, repeated vomiting, confusion, fainting, signs of dehydration, black stools, vomiting blood, or yellow skin with marked illness. Prompt assessment is also sensible when appetite loss comes with unexplained weight loss, a persistent change in bowel habits, or difficulty swallowing.

Ask what could explain the timing of the appetite change, whether your medicines or mood may contribute, which symptoms should trigger urgent help, and what examination or tests would clarify the cause.