What causes feeling generally unwell?

Malaise is a broad sensation rather than a diagnosis. A blocked or runny nose may fit a Common Cold, while fever, body aches, cough, or marked tiredness can occur with Influenza or COVID-19. Sore throat and swollen glands may point toward Glandular Fever. Nausea, poor appetite, or yellowing of the skin needs a different assessment, including for illnesses such as Hepatitis A. The combination, onset, and duration matter more than the feeling alone.

Rest, drink fluids regularly, and eat small amounts if your appetite is low. Check whether a new medicine, poor sleep, heat exposure, or reduced fluid intake may be contributing. Keep track of temperature and associated symptoms. Arrange a clinical review if the feeling does not settle, keeps returning, or is accompanied by symptoms that are becoming more troublesome.

Get urgent medical help for difficulty breathing, new confusion, fainting, severe weakness, blue or grey lips, a rapidly worsening condition, or very little urine. Fever with a widespread rash, severe pain, or a strong sense that something is seriously wrong also needs prompt assessment because Sepsis can progress quickly.

Tell the clinician when the change began, whether it is worsening, and which symptoms appeared first. Ask whether you need examination or tests, and mention recent travel, sick contacts, new medicines, fluid intake, and any long-term conditions.