Treatment of Sinusitis with Cough in Adults

Introduction to Sinusitis Treatment

The American Academy of Otolaryngology-Head and Neck Surgery recommends saline nasal irrigation and intranasal corticosteroids as first-line therapy for adults with sinusitis accompanied by cough, with antibiotics reserved for cases of confirmed acute bacterial sinusitis that meet specific diagnostic criteria 1, 2

Viral rhinosinusitis (VRS) is self-limited, typically lasting 7-10 days, and accounts for most cases of acute sinusitis 1
Chronic rhinosinusitis (CRS) is defined as symptomatic inflammation lasting ≥12 weeks with objective documentation of sinonasal inflammation 3

Symptomatic relief with analgesics (such as pain relievers) for pain or fever is recommended 1
Saline nasal irrigation to cleanse nasal passages and improve mucociliary clearance is recommended 1, 2
Topical intranasal corticosteroids to reduce inflammation are recommended 1
Decongestants may provide symptomatic relief but evidence for efficacy is limited 2
Antibiotics are NOT recommended for VRS as they are ineffective for viral illness 1

Saline nasal irrigation and intranasal corticosteroids for symptomatic relief are recommended 2
Watchful waiting (without antibiotics) is an appropriate initial strategy for uncomplicated ABRS 4
Amoxicillin with or without clavulanate for 5-10 days is the first-line antibiotic choice 4
For penicillin-allergic patients: doxycycline or a respiratory fluoroquinolone (like levofloxacin) may be used 5

First-generation antihistamine/decongestant combinations may help with cough related to post-nasal drip 6, 7
Guaifenesin may be used as an expectorant, though evidence for efficacy in sinusitis is limited 8

Assess for comorbid conditions that modify management, such as asthma, which frequently coexists with sinusitis and may contribute to cough 3
For patients with recurrent or chronic sinusitis with cough, consider referral for nasal endoscopy to confirm diagnosis and exclude other causes 9
If cough persists despite appropriate sinusitis treatment, consider other causes such as asthma, gastroesophageal reflux disease, or non-asthmatic eosinophilic bronchitis 10, 9

Overuse of antibiotics for presumed bacterial sinusitis when symptoms are actually due to viral infection 1
Prolonged use of topical decongestants (>3-5 days) can lead to rhinitis medicamentosa 6
Failure to distinguish between different types of sinusitis (viral, bacterial, chronic) leading to inappropriate treatment 4
Not addressing the cough component specifically, which may require targeted therapy beyond standard sinusitis treatment 10, 6