Latest developments on topical therapies in chronic rhinosinusitis

Purpose of review Topical therapies play an important role in the management of chronic rhinosinusitis (CRS). A detailed literature review was undertaken to appraise recent evidence surrounding current topical therapies and novel treatments used in the setting of recalcitrant CRS. Recent findings Effective sinus surgery aids in the delivery of topical therapies. Budesonide nasal rinses delivered by saline irrigation offer clinical and symptomatic improvements pre and postoperatively with a well-proven safety profile. Topical steroids may additionally offer direct antibacterial effects as per in-vitro testing. Topical antibiotics are not recommended in routine practice; however, they may be of benefit for short-term eradication therapy. Novel treatments are under keen investigation and include bacteriophage, colloidal silver and manuka honey. The evidence base for these treatments is not robust enough to recommend their routine use at present. Topical steroids delivered in conjunction with saline nasal irrigation offer the best combination of treatments in CRS and should be considered a standard of care. Wide surgical access and aggressive surgical debridement of polyposis facilitates the delivery of steroid irrigations to sinonasal mucosa and is associated with improved long-term outcomes following endoscopic sinus surgery. The use of novel treatments remains within the research setting alone.