Sinusitis — A Complete Clinical Teaching Note
Read it once and the whole of sinusitis sits in your head — what it is, why it happens, how each sinus behaves, and which complications must never be missed. Built from the ground up, then turned into clinical decisions.
Why This Guide
Sinusitis is scattered across textbooks as anatomy here, microbiology there, surgery somewhere else. This note pulls it into one thread built on a single idea — the blocked ostium — and shows how every cause, every symptom, and every complication flows from it. The age flip, the “office headache,” the postural test, the fungal red flags: all the points examiners actually test, explained so they stick.
It works at two levels at once: prevalence-first reasoning you can use in the OPD tomorrow, and the high-yield discriminators NEET-PG and AIIMS love — closing with eight clinical-reasoning MCQs and fully worked answers.
What You’ll Learn
- The one idea behind everything — blocked ostium → trapped mucus → infection, and how every trigger funnels into it.
- The age flip — maxillary in adults, ethmoid in children, sphenoid the rare one, with the bedside signs to predict each.
- Acute, sub-acute, chronic, recurrent — duration classification and the major/minor symptom criteria.
- Sinus-specific localisation — pain, tenderness, swelling, drainage; the “office headache” and the postural test.
- Chronic rhinosinusitis — with and without polyps, biofilms, and why infections turn chronic.
- Fungal sinusitis — AFRS (double-density sign) vs invasive mucormycosis (black eschar, a surgical emergency).
- FESS step by step, plus the full complication map — local, orbital, intracranial, descending.
- 8 AIIMS / NEET-PG MCQs with detailed reasoning.