Okay, let's tackle this question about maxillary sinusitis symptoms. First, I need to recall the anatomy of the maxillary sinus. The maxillary sinuses are located in the cheekbones, and their drainage is through the middle meatus of the nasal cavity. So, symptoms related to this area would likely involve the face, particularly the cheeks and upper teeth.

Common symptoms of sinusitis in general include facial pain, pressure, congestion, and discolored nasal discharge. But maxillary specifically—since it's near the upper teeth, dental pain or referred pain to the upper molars might be a key symptom. Also, the maxillary sinus is large, so symptoms might be more pronounced in the cheek area. Postnasal drip is another common symptom across all sinusitis types, but maybe more so in maxillary due to drainage patterns.

Now, the options aren't listed here, but common distractors might include symptoms like fever (which is more common in bacterial infections but not specific to maxillary), or symptoms related to other sinuses like frontal (forehead pain) or ethmoid (between the eyes). Also, maybe confusion with dental issues like toothache, which could be a differential diagnosis.

The core concept here is understanding the specific symptoms associated with maxillary sinusitis versus other sinuses and conditions. The correct answer would likely include dental pain, cheek swelling, or pain exacerbated by palpation of the cheeks. The incorrect options might involve symptoms from other sinuses or non-specific symptoms.

**Core Concept**
Maxillary sinusitis involves inflammation of the maxillary sinuses, located in the cheekbones. Classic symptoms include **dental pain**, **facial pressure in the cheeks**, **postnasal drip**, and **purulent nasal discharge**, due to anatomical proximity to upper molars and drainage via the middle meatus.

**Why the Correct Answer is Right**
The maxillary sinuses drain into the middle meatus, and their close anatomical relationship to the upper molars explains dental pain as a hallmark. Inflammation increases mucosal edema, obstructing drainage and causing mucus accumulation. Pain is often exacerbated by palpation over the maxillary sinus (Cheek test). Postnasal drip occurs due to mucus pooling and gravitational flow.

**Why Each Wrong Option is Incorrect**
**Option A:** Fever is nonspecific and not a defining feature of isolated maxillary sinusitis.
**Option B:** Forehead pain (frontal sinusitis) or periorbital pain (ethmoid sinusitis) would localize to different areas.
**Option C:** Cough without postnasal drip or facial pain is atypical for maxillary sinusitis.

**Clinical Pearl / High-Yield Fact**
Remember the **"cheek test"** for maxillary sinusitis: tenderness over the maxillary sinus on palpation is a key physical exam finding. Differentiate from dental pain by checking for tooth-specific tenderness or caries.

**Correct Answer: D. Dental pain, cheek swelling, postnasal drip, and purulent nasal discharge**

✓ Correct Answer: D. All of the above