Repeat sinus infections? It might be allergies

Here’s how to tell the difference

Monday, 30 March 2026: “People often assume every blocked nose is sinusitis, but that’s not always the case,” says Medipost pharmacist, Eva Mpe. According to South Africa’s first courier pharmacy, many patients with recurring ‘sinus problems’ are actually suffering from undiagnosed allergies – and the confusion can delay proper treatment.

A blocked nose, facial pressure, and a lingering cough are often blamed on “sinus problems”. But according to Mpe, allergies are frequently the real culprit, and confusing the two can delay the right treatment.

“Allergies and sinus infections can feel very similar, but the clues are there and knowing them makes all the difference,” she explains.

Allergies or sinus infection? Here’s how to know

Mucus appearance

• Allergies: Clear and watery
• Sinus infection: Thick, cloudy or yellow

Cough characteristics

• Allergies: Dry, irritating cough
• Sinus infection: Productive cough with mucus

Additional symptoms

• Allergies: Rarely cause a sore throat or fever
• Sinus infection: Often includes both

Duration

• Allergies: Usually ease when the trigger is removed
• Sinus infection: Persists and may worsen over days

Managing allergies

“Identify your triggers first. You cannot manage allergies effectively if you don’t know what is causing them,” Mpe explains. Once you identify the trigger, you can take steps to reduce your exposure, allowing you to feel better more quickly. Common allergens include pollen, dust mites, pet dander, certain foods, and insect stings.

Tips to help manage allergies more effectively

• Reduce exposure by keeping windows closed during high pollen periods.
• Use air purifiers to clean the indoor air.
• Clean regularly to minimise dust and pet dander.
• For food allergies: Read all labels carefully, avoid cross-contamination, and clearly communicate your needs when dining out.
• Consider medication: Over-the-counter antihistamines, decongestants, and nasal sprays available at Medipost Pharmacy can help ease symptoms.

Managing sinusitis

“Sinusitis, often linked to viral or bacterial infections, requires a different approach. Rest, hydration and warm compresses support recovery, while antibiotics or intranasal corticosteroids may be needed in more severe cases. Facial pain, difficulty breathing or symptoms lasting longer than a week should be assessed by a healthcare professional,” warns Mpe.

Medication safety

Even over-the-counter treatments need careful use:

• Antihistamines may cause drowsiness.
• Overused nasal sprays can worsen congestion or increase blood pressure.
• Corticosteroid sprays are effective if used correctly, but misuse can irritate the nasal passages.

“For gentler relief, we recommend saline sprays, nasal rinses and plant-based decongestants,” she says.

Caring for kids

“Children may struggle to explain symptoms, so parents should watch for signs, keep homes dust-free, encourage good hygiene and use gentle saline sprays. Persistent symptoms? See an allergist,” Mpe advises.

When to see a specialist

Recurrent or chronic sinusitis may require an ear, nose and throat (ENT) specialist to check for structural issues or to guide targeted treatment. “Don’t guess. Get the diagnosis right,” Mpe recommends. “Once you know whether it’s allergies or sinusitis, treatment is faster, safer and more effective.”

“Medipost Pharmacy is a leading healthcare provider in South Africa, offering a full range of pharmaceutical services, chronic delivery services, expert advice and trusted over-the-counter solutions to help manage allergies, sinusitis and other common conditions,” Mpe concludes.

 Ends

 Sidebar: infographic

Quick symptom checker

□ Clear, watery mucus

□ Itchy eyes or throat

□ Symptoms are worse in certain places or seasons

→ Most likely an ALLERGY

□ Thick, coloured mucus

□ Facial pain/pressure

□ Fever or body aches

→ Most likely a SINUS INFECTION

For media enquiries, please contact MNA at the contact details listed below: