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Chronic maxillary rhinosinusitis

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Chronic maxillary sinusitis - more correctly now termed chronic rhinosinusitis (CRS) - may occur if an acute maxillary sinusitis does not resolve and characterized by persistent sinonasal symptoms with mucosal inflammation lasting 12 weeks or more. (1)

An estimated 10% of the adult population is affected by chronic sinusitis in the UK. (2)

It is diagnosed when at least two cardinal symptoms (mucopurulent nasal drainage, nasal blockage or obstruction, facial pain/pressure/fullness, and hyposmia) are present along with objective evidence of inflammation for a duration exceeding 12 weeks. (3)

Reference

  1. Keating MK, Phillips JC, Phillips J. Chronic rhinosinusitis. Am Fam Physician. 2023 Oct;108(4):370-7.
  2. Royal College of Surgeons. Commissioning Guide: rhinosinusitis. December 2016 [internet publication].
  3. Payne SC, McKenna M, Buckley J, et al. Clinical practice guideline: adult sinusitis update. Otolaryngol Head Neck Surg. 2025 Aug;173(suppl 1):S1-56.

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