Sinusitis Treatment in Spain: What Tourists Need to Know

Nine out of ten sinus infections are caused by viruses, not bacteria — and antibiotics do nothing for a virus.^[1] That single fact changes everything about how sinusitis treatment in Spain should work for you as a tourist. If you are sitting in a hotel room right now with a throbbing face and blocked nose, the first thing you need is not necessarily a course of amoxicillin. It is an accurate assessment of what is going on and the right medication for your specific situation.

What's Actually Happening Inside Your Sinuses?

Your sinuses are four pairs of air-filled cavities inside the bones of your face. They sit behind your forehead, between your eyes, in your cheekbones, and deep behind your nose. Each cavity is lined with a thin layer of tissue called mucosa, and each one drains through a tiny opening — roughly the diameter of a pencil lead — into your nasal passages.^[2]

When you catch a cold or have an allergic reaction, that mucosal lining swells. The swelling narrows or completely blocks those tiny drainage openings. Mucus that would normally flow freely out of the sinuses gets trapped inside. The trapped mucus becomes a stagnant pool where bacteria or other irritants can build up, which triggers more inflammation, which causes more swelling, which blocks drainage further. Your body responds to this cycle with increased blood flow to the area, which is why your face feels so heavy and tender.

Most of the time, this entire process is driven by a viral infection — the same viruses that cause the common cold. Your immune system clears the virus within seven to ten days, the swelling goes down, drainage resumes, and the sinusitis resolves on its own. In roughly 2 to 10 percent of cases, though, bacteria take advantage of the trapped mucus and establish a secondary infection. That is bacterial sinusitis, and it is the only type that benefits from antibiotics.^[1]

Travel can make you especially vulnerable. Air conditioning in hotel rooms dries out your nasal passages. Cabin pressure changes during flights cause sudden swelling of the sinus linings. Exposure to new allergens — different pollens, dust, or air quality — can trigger the inflammatory cascade even without a virus. If you have been fighting a cold for a week and your symptoms suddenly get worse instead of better, that is a sign the situation may have shifted from viral to bacterial.

What Does Sinusitis Feel Like?

If you have sinusitis, you likely recognise several of these symptoms: a feeling of pressure or fullness in your face, especially across your forehead, cheeks, or the bridge of your nose. The pressure often gets worse when you bend forward — leaning over to tie your shoes, for example, can make it feel like your face is about to burst. Your nose is blocked on one or both sides, making it hard to breathe normally. You may have thick, discoloured mucus draining from your nose or down the back of your throat (post-nasal drip), which often triggers a persistent cough, especially at night.

You might also notice a reduced sense of smell and taste, bad breath, fatigue, and a general feeling of being unwell. Some people experience tooth pain in the upper jaw because the roots of the upper back teeth sit very close to the floor of the maxillary sinuses — when those sinuses are inflamed, the pressure can feel identical to a toothache.^[2]

That timeline is the single most useful tool for distinguishing viral from bacterial sinusitis. A fever that appears several days into the illness (rather than at the beginning) also suggests bacterial involvement, particularly if it is above 39°C (102°F). Severe one-sided facial pain with swelling is another red flag that points toward a bacterial cause requiring antibiotics.^[3]

Which Medications Actually Work?

The right sinusitis treatment depends on whether the infection is viral or bacterial, how severe your symptoms are, and how long they have been going on. Here are the medications that have evidence behind them and how to access each one in Spain.

What Can a Spanish Pharmacy Do Without a Prescription?

A Spanish farmacia can help you with quite a lot when it comes to sinusitis symptom relief. The pharmacist can sell you saline nasal sprays, paracetamol, ibuprofen, and oral or spray decongestants like pseudoephedrine or oxymetazoline without a prescription. Decongestants shrink the swollen blood vessels in your nasal lining and can provide quick relief from congestion — but they should only be used for three to five days maximum. Longer use causes rebound congestion, where your nose becomes more blocked than before you started using them. If you need decongestant tablets, ask for descongestionante nasal. For a spray, ask for Respibien or oximetazolina spray. What the pharmacy cannot sell you without a receta médica is antibiotics or prescription-strength corticosteroid nasal sprays like mometasone. Spain enforces prescription requirements for antibiotics strictly — and rightly so, given how often they are used unnecessarily for viral sinus infections. If your pharmacist believes you need an antibiotic or a steroid spray, they will tell you to see a doctor. Expect to pay between €5 and €15 for over-the-counter sinus relief products.

When Should You Go to a Hospital?

Most sinusitis is a miserable but self-limiting condition. You can manage it with the right over-the-counter products and, when needed, a prescription from a doctor. But in rare cases, a sinus infection can become serious — and as a tourist far from your usual healthcare provider, it helps to know exactly when to escalate.

These complications are rare, but they are the reason sinusitis should be taken seriously when symptoms are unusually severe or rapidly worsening. The sinuses sit very close to the eyes and brain, and in uncommon cases, infection can spread to surrounding structures. If you have any condition that weakens your immune system — diabetes, HIV, immunosuppressive medications, or chemotherapy — your threshold for seeking in-person care should be lower. Even without red-flag symptoms, bacterial sinusitis that has not improved after 48–72 hours of antibiotic treatment may need reassessment. An online doctor can help you decide whether you need to switch antibiotics or go to a clinic in person.^[6]

How Do You Get Sinusitis Treatment Quickly in Spain?

If your sinusitis has crossed the threshold where you need more than what the pharmacy can offer — your symptoms have lasted beyond ten days, they worsened after initial improvement, or you have a high fever with severe facial pain — getting a prescription quickly matters. Bacterial sinusitis responds best when antibiotics are started promptly, and prescription nasal steroids like mometasone are most effective the sooner you begin using them.^[4]

For tourists in Spain, accessing a doctor is often the bottleneck. Walk-in clinics (centros de salud) can involve long waits and may require a European Health Insurance Card or tarjeta sanitaria for coverage. Private clinics are faster but typically charge €60–150 for a consultation. Neither option is ideal when you are already feeling terrible and just need someone to assess whether your symptoms warrant antibiotics.

PrescribeMe connects you with a licensed Spanish doctor online — in English, without a clinic appointment. You describe your symptoms and their timeline through a brief consultation, the doctor evaluates whether you need antibiotics, a steroid nasal spray, or symptomatic treatment only, and issues a receta electrónica privada (a valid private electronic prescription) if medication is appropriate. The prescription arrives on your phone and is accepted at every farmacia in Spain. You walk in, hand over the prescription, and walk out with your medication. The whole process can happen from your hotel room.