Persistent cough, loss of appetite and fatigue

A cough may follow a respiratory infection, while fatigue and poor appetite can occur when your body is recovering. Influenza and COVID-19 can present with cough and tiredness; gastroenteritis, gastritis or a peptic ulcer may reduce appetite when digestive symptoms are present. Hepatitis A can include dark urine or yellowing of the skin and eyes. Depression can also change appetite and energy, but a persistent cough still needs its own explanation. Pancreatic cancer is uncommon, yet ongoing appetite loss with weight loss, upper abdominal pain or jaundice should be assessed promptly.

Arrange a GP appointment and record when each symptom began, whether the cough is dry or brings up mucus, and any fever, breathlessness, pain, vomiting or change in weight. Sip fluids regularly and choose small, nourishing meals if full meals feel difficult. Avoid smoking and note any new medicines or recent contact with someone who was unwell. Do not stop prescribed treatment without medical advice.

Seek urgent help for severe breathing difficulty, blue or grey lips, confusion, fainting, coughing blood or chest pain. Arrange prompt medical review for dehydration, persistent vomiting, yellow skin or eyes, black stools, severe abdominal pain or a cough that is steadily worsening.

Could the cough and appetite change have the same cause? Do I need a chest examination, blood tests or other checks? Which warning signs should make me seek help sooner?