What should you know about sepsis from a chest infection?

A chest infection affects the airways or lung tissue and may cause cough, phlegm, fever, or wheezing. Acute bronchitis often follows an infection affecting the airways, while pneumonia affects deeper lung tissue and can place greater strain on breathing. If infection and inflammation disrupt oxygen delivery or organ function, sepsis may develop. Symptoms can change quickly, and cough alone cannot establish whether sepsis is present.

Arrange a GP consultation when a chest infection is worsening, breathing feels harder, fever persists, or phlegm changes alongside increasing illness. Follow prescribed treatment and rest, drink fluids if safe, and avoid smoking. A nebuliser treatment may be considered by clinicians for selected breathing problems; it is not a substitute for assessment. Share any lung disease, pregnancy, immune problems, or regular medicines with the clinician.

Call emergency services for severe breathlessness, blue or grey lips, chest pain with collapse, new confusion, fainting, inability to stay awake, or rapidly worsening weakness. Fever with a person who is struggling to breathe or becoming unusually drowsy needs urgent assessment. Do not drive yourself if you feel faint or confused.

Ask whether the illness appears to involve the airways or lungs, whether oxygen levels need checking, and which treatment is appropriate. Ask how to monitor breathing, when to review symptoms, and which changes require emergency help.