When should you see a doctor about feeling generally unwell?

A general sense of illness, or malaise, can include weakness, aches, nausea, chills, low appetite, or reduced energy without one obvious symptom. It may occur with a short infection such as a Common Cold, Influenza, or COVID-19, but ongoing symptoms can have other explanations. Glandular Fever and Hepatitis A can also present with a broad feeling of illness, so associated symptoms and exposure history help guide assessment.

Rest, drink fluids, eat small nourishing meals if able, and check how symptoms change during the day. Record temperature readings, new pain, cough, vomiting, diarrhoea, rash, urine changes, travel, sick contacts, and medicines. Stay home from close contact when infection is possible and arrange review if improvement does not begin or daily activities become difficult.

Get urgent help for trouble breathing, chest pain, fainting, severe dehydration, a rapidly spreading rash, severe abdominal pain, new confusion, unusual drowsiness, or very little urine. Treat feeling profoundly unwell with a suspected infection as an emergency when it is accompanied by fast breathing, mottled or clammy skin, or difficulty staying awake, because Sepsis needs rapid assessment.

Ask which symptoms are most useful diagnostically, whether you need an examination or tests, how to manage fluids and rest, and what change should trigger urgent reassessment.