Double Board Certified · Functional Sinus Care

Sinus Infection — diagnose accurately, treat appropriately.

Sinus infection (sinusitis) is one of the most common — and most frequently mismanaged — reasons patients seek care. Effective treatment depends on…

ABFPRS

Facial Plastic & Reconstructive Surgery

ABOto

Otolaryngology — Head & Neck Surgery

AAFPRS

Fellowship Director

Editorial pencil-sketch portrait — clinical evaluation of suspected sinus infection

In Consultation

"Many patients labelled with "chronic sinus infections" actually have something else entirely. The first job is the right diagnosis."

A Note from Dr. Mourad

"Sinus infection (sinusitis) is one of the most common — and most frequently mismanaged — reasons patients seek care. Effective treatment depends on distinguishing acute from chronic, viral from bacterial, and infectious from non-infectious causes."

— Dr. Moustafa Mourad, MD

Overview

What is a sinus infection?

“Sinus infection” can refer to several different patterns. Many acute episodes are viral. Some meet clinical criteria for acute bacterial rhinosinusitis. Separate repeated episodes suggest recurrent acute disease, while symptoms lasting at least 12 weeks with objective inflammation suggest chronic rhinosinusitis.

This is the overview and routing page. Viral, acute bacterial, recurrent acute, chronic inflammatory, dental-source, and fungal disease do not follow one identical diagnostic or treatment pathway.

Treatment follows the diagnosis. Antibiotics are not routine for viral illness, chronic rhinitis, migraine, or chronic rhinosinusitis without evidence of an acute bacterial exacerbation. Imaging is not routinely needed for an uncomplicated acute episode.

Key takeaways

  • A sinus infection (sinusitis) is inflammation of the lining of the paranasal sinuses.
  • It is classified by duration — acute (under four weeks), subacute, and chronic (twelve weeks or more).
  • Most acute infections are viral; only a small share become truly bacterial.
  • Most acute episodes resolve with supportive care, with antibiotics reserved for specific criteria.
  • Recurrent or persistent infections deserve evaluation for an underlying driver.

An Established Academic Authority

Double board certification. Fellowship director. Published author. A surgeon's surgeon.

ABFPRS

Board Certified

American Board of Facial Plastic & Reconstructive Surgery

ABOto

Board Certified

American Board of Otolaryngology — Head & Neck Surgery

AAFPRS

Fellowship Director

American Academy of Facial Plastic and Reconstructive Surgery

Textbook

Published Author

Contributions to the academic literature of facial plastic surgery

Dual board certification in both Facial Plastic & Reconstructive Surgery and Otolaryngology — Head & Neck Surgery.

Castle Connolly Top Doctor — Plastic Surgery, 2026

02 · Symptoms

How this condition typically presents.

Three patterns are most common. Patients often recognise themselves in one or more of these.

I

Facial Pressure & Pain

Localised pressure or pain over the affected sinus — most commonly the cheek, forehead, or between the eyes.

II

Nasal Obstruction & Discharge

Congestion, thick discharge, and reduced sense of smell, often with post-nasal drip.

III

Persistent or Recurrent Symptoms

Symptoms that do not resolve within expected timeframes — or that keep recurring despite treatment.

03 · Anatomy

Acute vs chronic sinus infection.

The two are different diseases with different treatments. The duration of symptoms is the most important diagnostic variable.

Pencil-sketch coronal cross-section of an inflamed maxillary sinus showing acute mucosal swelling and a small fluid level; red dotted outline indicates the focal acute inflammation.

Acute

Less than 4 weeks

Acute sinusitis lasts less than 4 weeks — typically following a viral upper respiratory infection. Most cases resolve without antibiotics; a smaller proportion is bacterial and benefits from targeted therapy.

The right management depends on the pattern: viral cases get supportive care; bacterial cases get a deliberate antibiotic course.

Pencil-sketch coronal cross-section showing chronic sinus mucosal thickening across multiple sinuses; red dotted outlines indicate persistent inflammatory changes and obstructed drainage pathways.

Chronic

More than 12 weeks

Chronic sinusitis lasts more than 12 weeks and is, more often than not, an inflammatory disease rather than an infectious one. Polyps may or may not be present.

Management is combined — medical therapy for the inflammation, and surgical intervention when medical therapy is inadequate or when correctable structural obstruction is identified.

Illustrative diagrams. The same symptoms can come from very different underlying processes.

04 · Diagnosis

How the diagnosis is made.

Diagnosis is clinical for the typical case — symptom pattern, duration, and trajectory are the key variables.

Nasal endoscopy is performed when symptoms are atypical, prolonged, or recurrent — and is often where the true cause is identified.

CT imaging is reserved for persistent, recurrent, atypical, complicated, dental, fungal, or surgical questions.

01 · Why Dr. Mourad

Diagnosis first, treatment second.

Dr. Mourad is double board-certified in Facial Plastic & Reconstructive Surgery and in Otolaryngology — uniquely suited to evaluating both the structural and the inflammatory components of sinus disease.

In-office evaluation including nasal endoscopy clarifies what is and is not a true sinus infection.

Antibiotics are prescribed deliberately when appropriate, and avoided when they are not. Surgery is reserved for cases that warrant it.

When to Seek Care

When to seek care promptly.

Severe facial pain, high fever, or visual changes — these warrant urgent evaluation.

Significant facial swelling or redness around the eye — evaluate immediately.

Severe headache, neck stiffness, or change in mental status — evaluate immediately.

Symptoms not improving despite appropriate therapy within 5 to 7 days — return for re-evaluation.

Get a clear diagnosis

An honest evaluation often clarifies more in 45 minutes than years of trial-and-error.

Outlook

What to expect.

When the diagnosis is correct and the right treatment is applied, the outlook is generally good. Most patients describe meaningful improvement in symptoms and day-to-day function.

When symptoms persist despite treatment, the workup is re-opened. Persistent symptoms with no answer almost always mean the diagnosis is incomplete.

Living Well

Day-to-day measures that help.

Daily saline irrigation, control of indoor allergens, and good sleep hygiene meaningfully reduce day-to-day symptoms for many patients.

Medical therapy, when prescribed, works best when used consistently rather than as needed — this is one of the most common reasons treatment seems to fail.

Frequently Asked

Patient questions, honestly answered.

No. Most acute cases begin as viral infections. Chronic inflammatory disease, rhinitis, dental disease, and other conditions can mimic infection.

No. Color alone is not diagnostic; duration, severity, worsening pattern, examination, and context matter.

Recurrent disease consists of distinct attacks with improvement between them. Chronic disease persists for at least 12 weeks and requires objective inflammation.

CT is used selectively for persistent, recurrent, atypical, complicated, dental, fungal, or surgical questions.

Yes. Upper-tooth disease and dental procedures can affect the adjacent maxillary sinus and may require coordinated dental and ENT treatment.

Vision change, eye swelling, neurologic symptoms, altered mental status, frontal swelling, severe rapidly worsening headache, or rapid deterioration require prompt evaluation.

The Most Important Step

Get an expert evaluation.

A careful evaluation by a double board-certified physician is the right first step. The conversation is unhurried, the diagnosis is honest, and treatment is matched to what you actually have.