Persistent Cold Symptoms Beyond Two Weeks: Causes and When to See a Doctor
A typical viral upper respiratory infection (URI) resolves in 7–10 days. Symptoms persisting >2 weeks suggest complications or alternative diagnoses.
Common Causes of Prolonged Symptoms
| Cause | Clues | Action |
|---|---|---|
| Post-viral cough / bronchial hyperreactivity | Dry cough persists after other symptoms resolve; normal exam/CXR | Time, inhaled bronchodilator/corticosteroid if needed |
| Acute bacterial sinusitis | >10 days worsening ("double sickening"), purulent discharge, facial pain, fever | Antibiotics (amoxicillin-clavulanate) if bacterial criteria met |
| Allergic rhinitis | Sneezing, itchy eyes/nose, clear discharge, seasonal/perennial pattern | Intranasal corticosteroids, antihistamines, avoidance |
| Chronic sinusitis | >12 weeks congestion, facial pressure, hyposmia, nasal polyps | ENT referral; CT sinus; medical/surgical management |
| Deviated septum / turbinate hypertrophy | Fixed unilateral obstruction, snoring, recurrent sinusitis | ENT eval; septoplasty/turbinate reduction if symptomatic |
| Immunodeficiency | Recurrent/severe infections, poor vaccine response, family history | Immunology workup (IgG subclasses, vaccine titers) |
| Nasal polyps | Bilateral gray masses, anosmia, asthma association (Samter's triad) | Intranasal steroids; biologics (dupilumab) for severe |
| GERD / LPR | Postnasal drip, throat clearing, hoarseness, cough worse lying down | PPI trial, lifestyle modification |
| Medication side effect | ACE inhibitor cough (dry, persistent); beta-blocker bronchospasm | Switch medication |