Sinus Infection Treatment in Phuket: Viral, Bacterial or Allergic?
What is a sinus infection (sinusitis)?
The sinuses are air-filled spaces in the bones of the face, behind the cheeks, between and above the eyes and behind the nose. They are lined with a thin membrane that makes mucus, which normally drains into the nose through small openings. Sinusitis, also called rhinosinusitis, means that lining is inflamed and swollen. The openings block, mucus builds up, and the pressure causes pain and congestion.
Most acute sinus infections start with a cold or another viral upper respiratory infection, and the great majority stay viral. Only a small minority, roughly 1 in 50 cases after a cold, become a bacterial sinus infection that benefits from antibiotics. Allergies (allergic rhinitis), dental infections in the upper back teeth, swimming in pools and pressure changes when flying or diving can also trigger sinus problems. Doctors call it acute sinusitis when it lasts less than 12 weeks and chronic sinusitis when symptoms continue for 12 weeks or more.
Symptoms, and how to tell a cold, sinusitis and allergy apart
Typical sinus infection symptoms are a blocked or stuffy nose, facial pain or pressure that often feels worse when you bend forward, thick yellow or green discharge from the nose or down the back of the throat, a reduced sense of smell, and a headache. Some people have toothache in the upper jaw, ear fullness, bad breath, a cough or a mild fever. Children may simply have a persistent runny nose, cough and irritability.
| Feature | Common cold | Acute sinusitis | Allergic rhinitis |
|---|---|---|---|
| Main symptoms | Runny nose, sneezing, sore throat | Blocked nose, facial pain or pressure, thick mucus | Sneezing, itchy nose and eyes, clear watery mucus |
| Fever | Mild or none | Sometimes, usually mild | No |
| How long it lasts | 7 to 10 days | Usually 2 to 3 weeks | As long as you are exposed to the trigger |
| Usual treatment | Rest, fluids, symptom relief | Saline rinse, nasal steroid spray, pain relief; antibiotics only if bacterial | Antihistamine, nasal steroid spray, avoiding triggers |
If sneezing and itchy eyes are the main problem, our page on allergy treatment in Phuket is more relevant. If aches and a high fever came first, see flu and cold treatment in Phuket.
When a sinus infection needs antibiotics
Antibiotics do not help viral sinusitis, and even many bacterial sinus infections clear up on their own. International guidance, including NICE in the UK, suggests a bacterial infection is more likely, and antibiotics may be worth considering, in three situations:
- The 10-day rule: symptoms have lasted more than 10 days without any improvement.
- Double-sickening: you started to recover from a cold, then got worse again with new fever, more pain or more discharge.
- Severe onset: a high fever with severe one-sided facial pain and thick discharge for three or four days in a row.
When antibiotics are appropriate, doctors commonly prescribe amoxicillin, with alternatives such as doxycycline or a macrolide for people allergic to penicillin. Yellow or green mucus on its own does not mean you need antibiotics; it is part of the normal immune response to a virus.
How we diagnose and treat sinusitis at Takecare
The doctor asks how long you have had symptoms, whether they followed a cold, a flight or a dive, about allergies, dental pain and any previous sinus problems, then examines your nose, throat, ears and face, presses gently over the sinuses and checks your temperature. Sinusitis is a clinical diagnosis, so most people do not need an X-ray or scan. Imaging is reserved for complications or long-standing chronic sinusitis, usually arranged through an ear, nose and throat (ENT) specialist.
For most people, treatment aims to open the sinuses and relieve pain while the body clears the infection:
- Saline nasal rinses or sprays wash out mucus and reduce swelling. Use sterile, boiled-and-cooled or bottled water, never tap water.
- A steroid nasal spray reduces inflammation in the lining of the nose and sinuses, particularly helpful when allergy is part of the picture.
- Pain relief with paracetamol or ibuprofen eases facial pain and headache.
- A decongestant nasal spray can help for a few days, especially before a flight, but should not be used for more than 3 to 5 days.
- Steam and warm compresses over the cheeks and forehead can ease the pressure.
If you meet the criteria for a bacterial infection, the doctor will discuss antibiotics, how long to take them and what to expect. Most people feel better within a few days of starting the right treatment, although a blocked nose can take two to three weeks to settle completely.
The Phuket angle: air-conditioning, flights, diving and pools
Several things about a Phuket holiday make sinus trouble more likely. Long-haul flights dry the nose and expose you to other passengers’ colds, and descent with blocked sinuses can cause sharp pain in the forehead or cheeks. Air-conditioning set very cold dries the nasal lining overnight. Chlorinated pool water and sea water forced into the nose when diving or snorkelling can irritate the sinuses, and pressure changes when diving can cause sinus barotrauma, with pain and sometimes a nosebleed.
Do not dive with a blocked nose or an active sinus infection: if you cannot clear the pressure, both the sinuses and the ears are at risk, which our ear infection treatment page explains. If you have a flight soon, tell the doctor, who can plan treatment around it. If an airline needs written confirmation that you are fit to travel, see our fit to fly certificate in Phuket page. Setting the air-conditioning to around 25 to 26°C and drinking plenty of water also help.
When to see a doctor
See a doctor if your symptoms last more than 10 days, if you get better and then worse again, if the pain is severe, if you have a fever above 38.5°C, or if you keep getting sinus infections. People with asthma, a weakened immune system or diabetes should be seen earlier, as sinusitis can make asthma harder to control; our asthma treatment in Phuket page has more detail.
Go to a hospital emergency department or call 1669 straight away if you have swelling or redness around the eye, double vision or reduced vision, difficulty moving the eye, a severe headache, a stiff neck, confusion or drowsiness, or swelling of the forehead. These can mean the infection is spreading beyond the sinuses, which is rare but serious. Our emergency doctor in Phuket page explains when to come to us and when to go directly to hospital.
Prevention and early detection
Wash your hands often and avoid sharing drinks during cold season, since most sinus infections start with a cold. If you have allergies, keep them well controlled, because a constantly swollen nose blocks the sinus openings. Regular saline rinses help people who get repeated sinus infections, and stopping smoking or vaping reduces irritation of the lining. Before a flight or dive with a slightly blocked nose, a short course of a decongestant spray may help, but do not dive if you cannot clear easily.
Chronic sinusitis, with symptoms for 12 weeks or more, a permanently blocked nose or loss of smell, may be caused by nasal polyps or a structural problem and should be reviewed by an ENT specialist, usually after you return home.
Visiting Takecare Clinic in Phuket
You can walk in 24 hours a day at Takecare Clinic Bangtao (Cherngtalay), our Kata-Karon clinic or Takecare Clinic Patong near Bangla Road. No appointment is needed, most visits take under 30 minutes, and any medicine you need comes from our on-site pharmacy.
If facial pain and a fever make it hard to travel, our doctor can see you at your hotel anywhere in Phuket. You can also message us on WhatsApp with your symptoms or call 081-718-9080. If you are already on treatment and want advice on whether it is working, a telemedicine consultation can be a convenient follow-up.
We confirm the price before you come, offer direct billing with most travel insurers, and provide a medical report and itemised receipt for claims.
Related services and treatments
Sinus infections usually follow a cold or flu, which our flu treatment in Phuket page covers, including other upper respiratory infections. Mucus running down the back of the throat (post-nasal drip) often causes a scratchy throat in the morning, covered under sore throat treatment in Phuket. A nose that is always blocked by dust, pollen or pets may need allergy treatment, and blocked ears after a flight are covered on our ear infection page. For anything else, a walk-in doctor in Phuket is available day and night.
Summary
Most sinus infections follow a cold, are viral and settle within two to three weeks with saline rinses, a steroid nasal spray and pain relief. Antibiotics help only when symptoms last more than 10 days, get worse after improving, or start severely with high fever and facial pain. Flights, diving and cold air-conditioning make sinus problems more likely in Phuket. Swelling around the eye, vision changes, a severe headache or a stiff neck need emergency care.
Frequently asked questions
Do I need antibiotics for a sinus infection?
Usually not. Most sinus infections are caused by viruses and get better on their own with saline rinses, a nasal spray and pain relief. Antibiotics are considered when symptoms have lasted more than 10 days without improving, when you get worse after starting to recover, or when the illness starts severely with high fever and facial pain. A doctor can tell you which applies to you.
How long does sinusitis last?
Acute sinusitis usually improves within 7 to 10 days and clears within two to three weeks, although a blocked nose and cough can take a little longer to settle. Symptoms that last 12 weeks or more are called chronic sinusitis and should be reviewed by a doctor, often with referral to an ear, nose and throat specialist.
Can I fly or dive with a sinus infection?
Flying is usually possible, but descent can be painful if your sinuses are blocked. A decongestant spray before take-off and landing, chewing and swallowing can help, so ask the doctor if you have a flight booked. Do not dive with a sinus infection or a blocked nose, because you may not be able to equalise pressure, which can damage the sinuses and ears.
Is yellow or green mucus a sign of a bacterial infection?
Not on its own. Mucus often turns yellow or green a few days into a viral cold because of the immune cells fighting the infection. Doctors look at how long symptoms have lasted, whether you are getting worse after improving, and how severe the pain and fever are, rather than the colour of the mucus, when deciding whether antibiotics are needed.
Can I use a decongestant nasal spray for more than a few days?
It is best not to. Decongestant sprays work well for short-term relief but should usually be limited to 3 to 5 days. Using them for longer can cause rebound congestion, where the nose blocks up again as each dose wears off. Saline rinses and a steroid nasal spray are safer for longer use.
Can a doctor treat sinusitis at my hotel?
Yes. Our doctors visit hotels, villas and condos anywhere in Phuket at any hour. The doctor examines your nose, throat, ears and sinuses in your room, advises on treatment and brings the medicine to start it straight away. This is useful if facial pain and fever make travelling uncomfortable.
Sources
NHS: Sinusitis (sinus infection). NICE guideline NG79: Sinusitis (acute), antimicrobial prescribing. MedlinePlus: Sinusitis.
Sinus infection, sinusitis, acute rhinosinusitis, chronic sinusitis, maxillary sinus, frontal sinus, facial pain, nasal congestion, post-nasal drip, loss of smell, common cold, upper respiratory infection, allergic rhinitis, nasal polyps, saline nasal irrigation, steroid nasal spray, decongestant, oxymetazoline, rebound congestion, amoxicillin, doxycycline, paracetamol, ibuprofen, sinus barotrauma, diving, flying, ENT, NICE NG79, NHS, MedlinePlus, Bangtao, Cherngtalay, Kata, Karon, Patong, Phuket, Takecare Clinic Phuket.
This page is general health information and not a substitute for a medical consultation.