Understanding Acute Sinusitis: Causes, Symptoms, and When to See a Doctor

Sinusitis, also known as acute rhinosinusitis, is inflammation of the nasal and paranasal sinuses. Acute sinusitis typically lasts four weeks or less and is one of the most common reasons people seek primary care.

Causes of Acute Sinusitis

The most common cause of sinusitis is a viral infection, often following a cold or upper respiratory infection.

Symptoms of Acute Sinusitis

Typical symptoms of sinusitis include:

Thick yellow or green nasal discharge
Nasal congestion
Facial pain or pressure
Fever
Fatigue
Ear fullness
Headache
Reduced sense of smell

These symptoms generally resolve within 7–10 days.

Symptom Relief and At-Home Treatment

Most cases of acute sinusitis can be treated at home with symptomatic care, such as:

Saline nasal irrigation
Nasal steroid sprays
Steam inhalation or use of a humidifier
Antihistamines (if allergies are involved, though they may have a drying effect)

Viral vs. Bacterial Sinusitis

It can be difficult to distinguish between viral and bacterial sinusitis.

Viral sinusitis: Usually resolves with supportive care in 7–10 days.
Bacterial sinusitis: May be suspected if symptoms last more than 10 days or initially improve but then worsen within a week.

Many bacterial sinus infections also resolve without antibiotics, though some may require treatment.

When to Seek Urgent Care

Contact your healthcare provider promptly or seek urgent medical attention if you experience:

Persistent high fever > 102°F
Severe facial pain or headache
Vision changes
Stiff neck
Swelling or redness around the eyes

These symptoms may signal a more serious infection that requires immediate evaluation.

Compassion Primary Care Can Help

If your sinus symptoms are not improving or are getting worse, call or text Compassion Primary Care. We are a direct primary care (DPC) practice, and you can be seen as a non-member or join as a member for ongoing care.

Nursing your journey to lasting wellness.

Sinusitis