A sore throat, also called pharyngitis, is a scratchy or burning sensation in the back of the throat that can make swallowing or talking painful. Pharyngitis refers to inflammation of the tissue lining the throat (mucosa). Most sore throats are caused by viral infections, such as the common cold or flu. Along with soreness, you might also have symptoms like a runny nose or cough. Other causes include bacterial infections, allergies, or sleeping with your mouth open. Most sore throats improve with home care within 3 to 10 days, but contact your doctor if symptoms persist beyond a week, worsen, or are accompanied by fever or swollen lymph nodes.
Types of Pharyngitis
- Acute pharyngitis: Lasts about 3–10 days. This is the most common type.
- Chronic pharyngitis: Persists longer than 10 days (weeks) or recurs after improvement.
Symptoms and Causes
Symptoms
A sore throat may start as a dry or raspy feeling and worsen to sharp pain when swallowing or talking. Pain may also extend to the ears or side of the neck. If caused by an infection, other symptoms may include:
- Fever
- Headache
- Upset stomach
- Swollen lymph nodes
- Nasal congestion or runny nose
- Cough
- Fatigue
- Hoarseness
- Redness or swelling of the throat and tonsils
- White patches, spots, or streaks on the throat and tonsils
Causes
- Viral infections: Most sore throats are caused by viruses like cold or flu.
- Bacterial infections: Conditions like strep throat or bacterial sinus infections can cause a sore throat.
- Tonsillitis: Infection and inflammation of the tonsils, caused by bacteria or viruses.
- Allergies: Pollen, dust, pets, or mold can trigger postnasal drip, causing throat irritation.
- Acid reflux (GERD): Stomach acid backing into the esophagus can cause a burning throat sensation.
- Overuse or irritants: Yelling, spicy foods, smoking, or very hot liquids can strain the throat.
- Mouth breathing: Breathing through the mouth while sleeping can cause throat dryness and soreness.
- Tumors: Rarely, a sore throat may signal throat cancer or benign growths.
When to See a Doctor
Many sore throats occur as part of an upper respiratory tract infection (URTI), such as a cold or the flu, and often resolve on their own. However, visit a doctor if:
- Sore throat lasts more than a week
- Severe pain occurs
- Trouble breathing or swallowing
- Fever over 38°C
- Bulge in the back of the throat
- Blood in saliva or phlegm
- Rash develops
For children, a pediatrician can evaluate sore throats caused by viral or bacterial infections and may refer to an ENT doctor if the condition is recurrent, severe, or atypical.
For adults, an ENT (Ear, Nose, and Throat) doctor (otolaryngologist) is usually the most appropriate if your sore throat is persistent, severe, or recurrent, particularly when you notice:
- Redness, swelling, or white patches in your throat or tonsils
- Difficulty swallowing
- Ear pain associated with throat pain
- Recurrent sore throats or chronic infections
Viral vs. Bacterial Infections
| Feature | Viral Pharyngitis & Tonsillitis | Bacterial Pharyngitis & Tonsillitis |
|---|---|---|
| Common Causes | Mostly caused by viruses such as cold, flu, and other respiratory viruses. | Commonly caused by bacteria, especially Group A Streptococcus (strep). |
| Onset of Symptoms | Usually gradual and can be associated with general viral symptoms. | Often abrupt and more intense. |
| Throat Pain | Sore throat present; may be milder. | Sore throat often more severe. |
| Associated Upper Respiratory Symptoms | Often accompanied by cough, runny or stuffy nose, hoarseness, and other cold-like symptoms. | May lack strong cough or cold symptoms; more localized throat pain. |
| Tonsil Appearance | Red or swollen tonsils possible; white patches may occur but are less specific. | Red, swollen tonsils with prominent white or yellow spots or pus more common. |
| Fever | Fever may occur but is typically lower and can accompany other viral symptoms. | Fever is often higher and more pronounced. |
| Systemic Symptoms | May include fatigue, mild headache; often part of a broader viral illness. | Often includes significant fever, body aches, and tender lymph nodes. |
| Duration & Resolution | Usually resolves on its own within a few days (often 3–7). | May persist longer and requires medical evaluation for antibiotics. |
| Complications | Rare; usually self‑limiting. | Potential complications (especially untreated strep) include rheumatic fever or abscess. |
Antibiotic Resistance
Antibiotic resistance occurs when bacteria change in ways that make antibiotics, which were previously effective, no longer able to kill them or stop their growth. This problem is accelerated by the overuse or misuse of antibiotics, such as taking them when they are not necessary, for example, to treat viral infections, or not completing the full prescribed course.
When antibiotics are used inappropriately, resistant bacteria survive and multiply. These resistant bacteria can spread among people, creating a population-wide problem that makes infections harder to treat and reduces the number of effective antibiotics available for everyone. Antibiotics should not be taken without a doctor’s prescription.
Diagnosis and Tests
Your doctor will ask about your symptoms and perform a physical exam, including the throat, tongue, and sometimes ears. A strep test may be done to check for bacterial infection. Testing helps determine whether the sore throat is viral or bacterial, which guides treatment.
Management and Treatment
Home Remedies
- Take OTC pain relievers like acetaminophen, ibuprofen, or naproxen
- Suck on throat lozenges or hard candy (avoid for children under 5)
- Try ice chips, popsicles, or cold foods (Contrary to popular belief, cold can help relieve sore throat pain by numbing irritation and reducing swelling)
- Drink soothing liquids like tea with lemon and honey, broth, or cool water (Staying hydrated is important for soothing a sore throat and keeping the throat tissues moist)
- Gargle with saltwater (½ teaspoon per 1 cup water)
- Use a humidifier or vaporizer
- Rest your voice if strained
- Avoid irritants like secondhand smoke, very hot drinks, and spicy foods
Medical Treatment
It depends on the cause:
- Viral infections: Usually resolve on their own within a week; OTC medications may help relieve symptoms. antibiotics are not effective against viruses.
- Bacterial infections: Antibiotics may be needed, often for 10 days.
- Allergies: OTC antihistamines can reduce postnasal drip.
- Acid reflux: OTC antacids and lifestyle changes (like avoiding late meals) can help.
- Severe cases: a doctor may prescribe a medicated mouthwash containing a local anesthetic, an antihistamine, and soothing agents. This mouthwash temporarily relieves pain and reduces throat irritation.
Outlook / Prognosis
Most sore throats are mild and caused by viral infections, improving within 3–10 days. Persistent symptoms may indicate a condition requiring prescription treatment.
Prevention
To reduce the risk of sore throats caused by viral infections:
- Wash your hands frequently with soap or alcohol-based sanitizer
- Avoid sharing food, drinks, or utensils
- Limit contact with people who are sick
- Stay home when ill to prevent spreading infections
- Flu vaccines are recommended for young children, older adults, pregnant women, and those with chronic health conditions.