Treatment for Influenza-Like Illness with Cough and Runny Nose
For a patient with 2 days of flu, cough, and runny nose, give paracetamol or ibuprofen for fever and body aches, ensure rest and plenty of fluids, avoid smoking, and consider a short course of topical decongestants, throat lozenges, or saline nose drops for symptom relief. 1
Core Symptomatic Management
The British Infection Society/British Thoracic Society guidelines provide clear direction for managing influenza-like illness in the outpatient setting. The evidence base for symptomatic treatments is admittedly limited, but these interventions are unlikely to cause harm and clinical experience supports their use 1.
Primary Medications
- Antipyretics for fever, muscle aches, and headache: Use paracetamol or ibuprofen 1
- Rest: Essential for recovery
- Hydration: Drink plenty of fluids 1
- Smoking cessation: Avoid smoking during illness 1
Additional Symptomatic Options
Consider the following for specific symptoms:
- Topical decongestants (short course only) for nasal congestion
- Throat lozenges for sore throat
- Saline nose drops for rhinorrhea 1
Important Age-Specific Caveat
If this patient is under 16 years old, aspirin is absolutely contraindicated due to the risk of Reye's syndrome 1. Use paracetamol or ibuprofen instead.
When to Escalate Care
The patient should return for reassessment if any of the following develop:
- Shortness of breath at rest or with minimal activity
- Painful or difficult breathing
- Coughing up bloody sputum
- Drowsiness, disorientation, or confusion
- Fever persisting 4-5 days without improvement or worsening
- Initial improvement followed by recurrence of high fever 1
Antiviral Considerations
At 2 days into illness, antiviral therapy may be considered if:
- The patient is at high risk for complications (chronic medical conditions, immunocompromised, elderly)
- Symptoms are severe or rapidly worsening
- Treatment can be initiated within 48 hours of symptom onset 2
However, for otherwise healthy patients with non-severe symptoms, antivirals are generally not indicated 3, 4. The 2024 WHO guidelines conditionally recommend baloxavir for high-risk non-severe cases within 2 days of symptom onset, but do not recommend antivirals for low-risk non-severe influenza 4.
Antibiotics: Not Indicated
Antibiotics should not be used unless there is clear evidence of bacterial co-infection 2, 4. The WHO provides a strong recommendation against antibiotics in non-severe influenza without bacterial infection 3.
Risk Stratification
Management hinges on two key assessments:
- Illness severity: This patient appears to have non-severe disease (able to function at home with cough and runny nose)
- Risk factors: Determine if the patient has conditions placing them at high risk for complications (chronic lung disease, heart disease, diabetes, immunosuppression, pregnancy, age >65 years) 1
For patients without high-risk features and non-severe symptoms, symptomatic treatment alone is appropriate and face-to-face consultation may not be necessary 1.