What causes coughing and fever?

Coughing accompanied by mild fever is a very common symptom, most frequently associated with the common cold or upper respiratory tract infection. Almost everyone experiences colds, sometimes several times per year. In such cases, the underlying cause is typically a viral or, less commonly, bacterial infection—most often viral—which triggers inflammation of the respiratory mucosa or airways. This inflammation irritates the airways and increases the sensitivity of cough receptors, thereby inducing the cough reflex.

Additionally, viruses or bacteria may produce pyrogens and pro-inflammatory cytokines, eliciting an immune or inflammatory response in the body that manifests as fever. Indeed, fever itself is not necessarily harmful; rather, it reflects the body’s active immune defense against disease—thus, fever is part of the body’s natural disease-fighting process.

However, if the fever is high—specifically, above 38.5°C (101.3°F) or especially above 39°C (102.2°F)—appropriate antipyretic medications may be used. Generally, fevers below 38.5°C do not require specific pharmacological intervention and can be managed with physical cooling measures, such as applying cool, damp towels or performing alcohol sponging.