Causes
- Usually caused by an infection of the throat (pharyngitis). Since the tonsils are in that area, they are usually also infected (tonsillitis).
- Colds (URIs).
Most sore throats are part of a cold. In fact, a sore throat may be the only symptom for the first 24 hours.
- Influenza.
A sore throat can be the first symptom in flu infections.
- Viral pharyngitis.
Some viruses cause a sore throat without nasal symptoms.
- Herpangina.
A special viral infection of the throat that causes little ulcers near the tonsils.
- Strep pharyngitis.
Group A Strep is the most common bacterial cause. It accounts for 20% of persistent sore throats. Only these need an antibiotic.
- Postnasal drip.
Drainage from sinus congestion can cause a sore throat. Sometimes, it's because the secretions are irritating to the throat. More often, it's from the frequent throat clearing.
- Mouth breathing.
Children who sleep with the mouth open may wake with a sore throat. It feels better within an hour of having something to drink. Use a humidifier to help prevent a dry mouth.
Strep Throat
- Symptoms include sore throat, fever, headache, stomach pain, nausea and vomiting.
- Cough, hoarseness, red eyes, and runny nose are usually not seen with Strep throat. These symptoms point more to a viral cause.
- Scarlet fever rash (fine, red, sandpaper-like rash) is highly suggestive of Strep throat.
- Peak age: 5 to 15 years old. Not common under 2 years old unless sibling has Strep.
- Diagnosis should be confirmed by a Strep test before starting treatment. There is no risk to wait until a Strep test is done.
- Standard treatment is with antibiotics by mouth.
Prevention of Spread to Others
- Good hand washing can prevent spread of infection.