Fever
A raised body temperature, often linked to infection or inflammation.
Note: This page lists possible explanations and is not a diagnosis.
Possible explanations to explore
Influenza (flu)
A viral illness that commonly causes fever, cough, aches, and fatigue.
COVID-19 (possible)
A viral infection that may cause fever, cough, sore throat, and other symptoms.
Pneumonia (possible)
An infection of the lungs that can cause cough, fever, chest pain, and breathing difficulty.
Sepsis (medical emergency)
A life-threatening reaction to infection that needs urgent emergency treatment.
Meningitis (medical emergency)
Inflammation of the protective membranes around the brain and spinal cord; urgent medical assessment is needed.
Red flags (seek urgent care)
- Severe breathing difficulty or bluish lips
- Chest pain with breathing and severe worsening illness
- Confusion, slurred speech, or extreme drowsiness
- Severe breathlessness or fast breathing
- Skin mottling / severe illness / rapidly worsening symptoms
- Severe headache with neck stiffness
- Confusion, drowsiness, or reduced responsiveness
- Seizure, collapse, or rapidly worsening condition