What are the possible complications of untreated acute sinusitis (sinus infection)?

Updated: Mar 01, 2018
  • Author: Itzhak Brook, MD, MSc; Chief Editor: Michael Stuart Bronze, MD  more...
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Treatment fails in 10-25% of patients. If this occurs, consider taking a repeat history and perform an additional physical examination; consider an imaging study. Start second-line antibiotics. Approximately 75% of orbital or periorbital infections are the result of extending sinusitis. Untreated, inadequately treated, or partially treated rhinosinusitis may lead to chronic rhinosinusitis, meningitis, brain abscess, or other extra-sinus complications.

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