Acute sinusitis
Acute sinusitis is inflammation of the spaces around the nose, often following a cold. The colour of nasal discharge alone does not determine whether antibiotics are needed.
What is this condition?
Acute sinusitis is inflammation of the spaces around the nose, often following a cold. The colour of nasal discharge alone does not determine whether antibiotics are needed.
Main symptoms
A runny or blocked nose, facial pain or pressure, postnasal drip and sometimes fever. Children may mainly have a cough.
Causes
Viral infections are common triggers. Bacterial infection may develop in some cases; the course and severity help guide treatment.
When to see a clinician
Seek advice if symptoms persist, worsen again after improving, or include significant fever or facial pain.
Examination and tests
We examine the nose and review the duration and progression of symptoms. Imaging is considered when the findings or course make it necessary.
Tests are selected according to your symptoms and examination. Specialist tests or procedures may require referral.
Treatment
Nasal care and medicines may help symptoms. Antibiotics are considered when bacterial infection is sufficiently likely. Persistent or recurrent symptoms require reassessment.
These are general treatment options. Your clinician will discuss which approach fits your condition; not every treatment described is provided at this clinic.
What you can do at home
Rest, drink fluids and use prescribed medicines as directed. Do not start leftover antibiotics. Ask how to perform nasal rinsing safely if it is recommended.
Frequently asked questions
Does green nasal discharge mean I need antibiotics?
No. Discharge colour alone cannot reliably distinguish a bacterial infection from other causes.
What should I tell the clinician?
Tell us when symptoms began, whether they are changing, your medicines and allergies, and any relevant medical conditions. For a child, describe changes in feeding, sleep or response to sound.
Related symptoms and conditions
Visiting Honda ENT Clinic
Check temporary changes
| Day | Morning | Afternoon |
|---|---|---|
| Mon / Tue / Wed / Fri | 9:00–12:30 | 15:00–18:20 |
| Saturday | 9:00–11:00 | 14:00–16:00 |
| Closed | Thursday, Sunday and public holidays | |
Reception opens 15 minutes before each session. Walk-ins are welcome for general consultations. Vaccinations may require an appointment.
Please call before visiting if you have a fever of 37.5°C or higher, a recent positive infection test, a household member with an infection, or would like infection testing. The waiting-time service is in Japanese.
Schedules can change. Check clinic news or call before travelling.
About this information and references
This information is published by Honda ENT Clinic and is intended as general guidance. Individual diagnosis and treatment require a clinical assessment. Updated: 6 October 2026.
About Medical Director Dr. Yusuke Honda