## Core Concept
Frontal sinusitis refers to the inflammation of the frontal sinuses, which are one of the paranasal sinuses. The condition can result from infection, allergies, or other factors leading to sinus obstruction. Understanding the anatomy and drainage pathways of the sinuses is crucial for diagnosing and managing sinusitis.

## Why the Correct Answer is Right
The correct answer, although not directly provided, will be evaluated based on common facts about frontal sinusitis. Typically, frontal sinusitis can lead to complications such as periorbital or intracranial infections due to its proximity to these areas. The frontal sinuses drain into the nasal cavity through the frontonasal duct, which opens into the middle meatus. This anatomical relationship is key to understanding the spread of infection.

## Why Each Wrong Option is Incorrect
Without specific details on options A, B, C, and D, a general approach to evaluating incorrect statements about frontal sinusitis is provided:

- **Option A:** If a statement claims frontal sinusitis only occurs in adults, it would be incorrect because frontal sinusitis can occur in children and adolescents as well, although the frontal sinuses are not fully developed until late adolescence.
- **Option B:** If a statement suggests that frontal sinusitis always presents with severe headache, it would be an oversimplification. While headache is a common symptom, the presentation can vary widely among individuals.
- **Option C:** If a statement proposes that frontal sinusitis is exclusively caused by bacterial infections, it would be incorrect. Frontal sinusitis can result from viral infections, allergic reactions, or fungal infections, among other causes.
- **Option D:** If a statement implies that frontal sinusitis never requires surgical intervention, it would be incorrect. Some cases of frontal sinusitis, especially those complicated by abscess formation or severe anatomical obstruction, may require surgical drainage.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the frontal sinuses are not present at birth and begin to pneumatize around the second year of life, reaching full size in late adolescence. This developmental aspect is crucial when considering the diagnosis and management of sinusitis in pediatric patients.

## Correct Answer: D.