Common Upper Respiratory Tract Infections in Autumn

As the weather suddenly turns chilly in late September, we see a sharp increase in upper respiratory tract infections. Although autumn illnesses like pharyngitis, tonsillitis, and the common cold are often confused with one another, their underlying causes and treatment processes are quite different. Accurately identifying the source of complaints like a burning sensation in the throat, difficulty swallowing, and a runny nose is the first crucial step toward speeding up your recovery.

• The common cold typically presents with a runny nose, sneezing, and mild fatigue.
• Pharyngitis is the inflammation of the back of the throat and causes a severe sensation of dryness.
• Tonsillitis can lead to difficulty swallowing, high fever, and chills.
• The vast majority of upper respiratory tract infections are viral and do not require antibiotics.
• A diet and sleep routine that supports the immune system plays a critical role in preventing illness.

What is an Upper Respiratory Tract Infection?

Illnesses affecting the upper part of the respiratory tract—including the nasal cavity, sinuses, pharynx, and larynx—are known as upper respiratory tract infections. Especially toward late September, as temperatures drop, schools reopen, and we spend more time indoors, the spread of these infections accelerates significantly. The mucous membrane lining the respiratory tract dries out under the influence of cold air, weakening its natural defense shield against germs.

The most common types encountered in the community include the common cold, pharyngitis, and tonsillitis. While adults typically catch these infections two to four times a year, this number can rise to eight to ten times for nursery and school-aged children whose immune systems are still developing. The incubation period usually ranges from one to three days after the virus or bacteria enters the body. Although most cases are mild and tend to resolve on their own within a week, correctly identifying the underlying cause completely changes the direction of the treatment.

Causes and Risk Factors

Viruses are at the root of more than eighty percent of the sore throats and respiratory complaints that spike during the autumn months. Rhinoviruses, adenoviruses, and mild strains of the coronavirus family are the most common culprits behind the common cold and viral pharyngitis. However, bacteria—specifically Group A beta-hemolytic streptococcus—are the primary cause of tonsillitis and bacterial pharyngitis.

The biggest risk factor for the spread of these illnesses is direct transmission via respiratory droplets. Invisible germs expelled into the air when a sick person coughs, sneezes, or talks loudly easily pass to others in crowded, enclosed spaces. In a bustling metropolis like Istanbul, public transport, crowded offices, nurseries, and schools are areas where the risk of transmission is highest. Furthermore, sudden temperature fluctuations during seasonal transitions, exposure to wind, inadequate sleep, intense stress, and a monotonous diet lower the body's resistance and pave the way for infections. The balance of your gut flora also directly affects your body's resistance; for more detailed information on this, you can read our article Our Second Brain is Changing Seasons: The Critical Role of Probiotics in the Immune System.

Symptoms: The Difference Between Pharyngitis, Tonsillitis, and the Common Cold

Although these three illnesses often begin with similar complaints like fatigue and a mild sore throat, the specific symptoms that emerge in the following days make it easier to distinguish them clinically. The severity of the symptoms can vary depending on the patient's age, overall health, and the infectious agent.

The Common Cold

The common cold is mostly dominated by nasal congestion, a clear, watery runny nose, and frequent sneezing. While a mild tickle or burning sensation in the throat may be felt in the first day or two, it quickly gives way to nasal complaints. Fever is usually within normal limits or rises very slightly in adults. Watery eyes, a dry cough due to postnasal drip, and mild muscle aches may accompany the clinical picture.

Pharyngitis (Throat Inflammation)

The most distinct feature of pharyngitis is a severe sensation of dryness, burning, and irritation in the throat. Patients often feel as if a foreign object is scratching their throat when they swallow. Hoarseness, mild swelling in the neck's lymph nodes, and a stubborn dry cough are common. If the illness is viral, a runny nose and sneezing might also be present, but nasal complaints are rare in bacterial pharyngitis, where the pain is much sharper.

Tonsillitis

In tonsillitis, difficulty swallowing is much more severe compared to pharyngitis. Fever typically rises above 38 degrees Celsius, accompanied by sudden bouts of chills and shivering. When the mouth is opened, the tonsils can be seen as excessively red and swollen, sometimes dotted with white or yellowish pus-filled spots (crypts). A severe headache, pain radiating to the ears when swallowing, bad breath, and tender, swollen lymph nodes in the neck are among the typical symptoms.

Diagnosis: How is it Diagnosed at the Hospital?

The most important step in diagnosing respiratory tract infections is a detailed physical examination by a specialist physician. Examining the ears, nose, and throat with special illuminated instruments (otoscope, rhinoscope, and tongue depressor) provides the doctor with substantial information about the type and location of the infection. The physician meticulously checks the size of the tonsils, the presence of pus, the redness on the back wall of the throat, and any swelling in the neck's lymph nodes.

To definitively distinguish between viral and bacterial infections—and particularly to prevent unnecessary antibiotic use—a rapid antigen test (rapid strep test) is frequently performed. In this test, a swab sample is taken from the tonsils and the back of the throat in seconds using a thin cotton-tipped swab, and the results are ready in about fifteen minutes. When deemed necessary, blood tests measuring inflammatory markers like a complete blood count (hemogram) and CRP may be requested to evaluate the severity of the infection and its spread in the body. If the patient's complaints have been ongoing for a long time and there is sinus pressure, radiological imaging methods may also be utilized to check the condition of the sinuses.

Treatment: Home Care and Medical Interventions

The treatment of upper respiratory tract infections is specifically tailored to the underlying cause (virus or bacteria). For viral infections, which make up the vast majority of cases, antibiotics have no curative effect whatsoever. In these situations, treatment is entirely focused on alleviating symptoms and improving the patient's daily comfort. The doctor may prescribe fever reducers, painkillers, decongestant sprays to relieve nasal congestion, and lozenges to soothe the throat. However, if bacterial pharyngitis or tonsillitis is detected, an appropriate antibiotic treatment determined by the physician is started without delay. It is absolutely essential to take the antibiotic for the full duration recommended by the doctor (usually 7 to 10 days), even if the symptoms disappear within a few days, to prevent the illness from recurring and to avoid developing antibiotic resistance.

In addition to medical treatment, resting at home, drinking at least two liters of water a day, and consuming warm herbal teas will speed up the recovery process. During this period, adopting a natural immune-boosting diet rich in vitamin C and zinc, focusing on fresh fruits and vegetables, will increase body resistance. Regularly airing out the room and placing a container of water on the radiator to maintain ambient humidity will also help soothe dried-out respiratory tracts.

Complications and Risk Groups

Respiratory tract infections that are left untreated or abandoned halfway against a doctor's advice can lead to various complications as the infection spreads to surrounding tissues. Due to their anatomical structure, it is particularly common in children for a throat infection to reach the middle ear via the Eustachian tube, resulting in a middle ear infection (otitis media). If the infection spreads to the cavities around the nose (sinuses), it causes acute sinusitis. If you would like to learn more about this condition, you can check out our article That Lingering Flu Might Be Sinusitis: Symptoms and Treatment.

Inadequate treatment of bacterial tonsillitis (especially the beta microbe) can pave the way for much more serious systemic illnesses in the following weeks, such as acute rheumatic fever or kidney inflammation (glomerulonephritis), which permanently affect the heart valves and joints. Individuals whose immune systems are suppressed for various reasons, people over the age of sixty-five, those with chronic lung diseases like asthma or COPD, diabetic patients, and young children are in the highest risk group for these complications.

When to See a Doctor

Mild cold symptoms generally begin to subside within a few days with supportive care at home. However, certain signs indicate that the illness has reached a more serious stage or that a secondary bacterial infection has developed. You should visit a healthcare facility without delay if you notice any of the following warning signs:

• A stubborn high fever that lasts longer than three days and does not drop below 38.5 degrees Celsius despite fever-reducing medications.
• Severe sore throat radiating to the neck that makes it impossible to swallow even saliva or liquids.
• Visibly swollen lymph nodes in the neck area that are painful to the touch.
• Hearing a whistling wheeze while breathing or feeling tightness in the chest.
• Symptoms progressively worsening rather than improving after a week.

If the patient experiences emergency symptoms such as sudden severe shortness of breath, a feeling of being unable to breathe, bluish discoloration of the lips or face, confusion, excessive sleepiness, or severe chest pain, you must immediately call the 112 Emergency Call Center or head to the nearest hospital's emergency department without losing any time.

The Process at BHT CLINIC

The Ear, Nose, and Throat (ENT) Diseases department at BHT CLINIC İstanbul Tema Hastanesi provides services using up-to-date medical approaches and modern equipment for the diagnosis and treatment of all respiratory tract infections common in the autumn months. When you visit our hospital, our specialist physicians will conduct a detailed endoscopic examination, and any necessary laboratory tests (rapid antigen tests, blood tests) will be rapidly processed on the same day to create your personalized treatment plan.

In cases of sudden high fever, inability to swallow, or severe sore throat occurring outside of regular working hours, you can confidently visit our fully equipped emergency department, which operates 24/7. Our emergency room physicians will perform the initial medical intervention and, when necessary, coordinate your treatment with our relevant specialist doctors. Bringing a list of any regular medications you take and recent test results with you to the hospital will help speed up the diagnosis and treatment process.

Frequently Asked Questions

What is good for a sore throat at home?

Gargling with warm salt water, consuming plenty of fluids, and drinking warm herbal teas mixed with honey and lemon help soothe throat irritation. However, these methods are not curative, only comforting; if your complaints persist, you should consult a physician.

Are the common cold and the flu the same thing?

No, the common cold is typically caused by rhinoviruses and presents with a mild runny nose and sneezing. The flu (influenza), on the other hand, is a different, more severe viral infection characterized by a sudden onset of high fever, severe muscle and joint pain, and extreme fatigue.

Is it necessary to use antibiotics for every sore throat?

The vast majority of sore throats are viral, and antibiotics have no effect against viruses. Antibiotic treatment should only be used when a bacterial infection (such as streptococcus) is detected by a physician following an examination and tests.

Is tonsillitis contagious?

Yes, both viral and bacterial tonsillitis are contagious. The microorganisms causing the illness can easily pass to others through the patient's coughing, sneezing, or the sharing of personal items.

What should I do to protect myself from upper respiratory tract infections?

Washing your hands frequently with soap and water, avoiding crowded and poorly ventilated spaces as much as possible, and avoiding close contact with sick individuals are the most effective ways to protect yourself. Furthermore, keeping your immune system strong through regular sleep and a balanced diet is of great importance.

To enjoy a healthy autumn and get an accurate diagnosis for any lingering complaints, you can easily schedule a consultation with our specialist physicians via our appointment page.

This article is for informational purposes only; please be sure to consult your physician for diagnosis and treatment.