Dark urine and loss of appetite: what to know

Reduced appetite commonly accompanies illnesses that also reduce fluid intake. Vomiting, diarrhoea, fever, or sweating can concentrate urine. Viral illness may bring tiredness, aches, nausea, or a sore throat, while stomach inflammation or an ulcer may cause upper abdominal discomfort, nausea, or early fullness. Dark tea-coloured urine with yellow eyes, pale stools, itching, or pain under the ribs raises concern about bile or liver processing. Low mood can reduce appetite, but it does not explain every change in urine. These symptoms point to several possibilities rather than one diagnosis.

Take small, regular sips of fluid and choose simple foods when tolerated; oral rehydration may be useful after fluid loss if a clinician or pharmacist advises it. Record urine colour, urine output, fever, vomiting, stool changes, pain, medicines, and recent travel or sick contacts. Avoid alcohol and do not stop prescribed medicines without advice. Arrange a review if appetite remains low, dark urine does not ease, or eating and drinking are becoming difficult. Assessment may include urine and blood tests.

Seek urgent help for confusion, fainting, severe abdominal pain, blood in vomit or stool, repeated vomiting, inability to keep fluids down, very little urine, or yellow eyes or skin. Prompt care is also needed when symptoms worsen quickly, weakness is marked, or a person with diabetes, liver disease, or another long-term condition cannot maintain usual intake.

Could an infection, dehydration, digestive problem, or liver issue explain both symptoms? Which medicines or supplements should I review? Do I need urine, liver, kidney, or infection tests? What should I eat and drink while my appetite is low?