Common Causes of Fever & When to See a Doctor

Fever is a natural response of the body to infection or illness, indicating that the immune system is fighting harmful pathogens. The most common causes of fever include viral infections like cold and flu, bacterial infections such as throat infection or urinary tract infection, and seasonal illnesses like dengue or malaria in certain regions. Fever can also occur due to inflammation, heat exhaustion, certain medications, or after vaccinations. In most mild cases, fever resolves on its own with rest, fluids, and basic care. However, it is important to monitor symptoms closely. You should consult a doctor if the fever is very high, persists for more than 2–3 days, or is accompanied by symptoms like severe headache, difficulty breathing, chest pain, persistent vomiting, rash, confusion, or dehydration. In children, elderly individuals, and people with existing health conditions, medical attention should be sought earlier. Timely diagnosis helps identify the underlying cause and ensures proper treatment and recovery.