Sore Throat
Causes
Causes of sore throat include:
Viruses, like those that cause colds or flu
The bacteria group A strep, which causes strep throat (also called streptococcal pharyngitis)
Allergies
Smoking or exposure to secondhand smoke
Of these, infections from viruses are the most common cause of sore throats.
Strep throat is an infection in the throat and tonsils caused by bacteria called group A Streptococcus (also called Streptococcus pyogenes).
Symptoms of Sore Throat
A sore throat can make it painful to swallow. A sore throat can also feel dry and scratchy. Sore throat can be a symptom of strep throat, the common cold, allergies, or other upper respiratory tract illness.
The following symptoms suggest a virus is the cause of the illness instead of the bacteria called group A strep:
Cough
Runny nose
Hoarseness (changes in your voice that makes it sound breathy, raspy, or strained)
Conjunctivitis (also called pink eye)
Symptoms of sore throat, whether caused by viruses or by the bacteria called group A strep, can often be similar.
Symptoms of Strep Throat
The most common symptoms of strep throat include:
Sore throat that can start very quickly
Pain when swallowing
Fever
Red and swollen tonsils, sometimes with white patches or streaks of pus
Tiny red spots on the roof of the mouth
Swollen lymph nodes in the front of the neck
Sometimes someone with strep throat also has a rash known as scarlet fever (also called scarlatina).
When to Seek Medical Care
See a doctor if you or your child have symptoms of strep throat. You or your child may need to be tested for strep throat.
Also see a doctor if you or your child have any of the following:
Difficulty breathing
Difficulty swallowing
Blood in saliva or phlegm
Excessive drooling (in young children)
Dehydration
Joint swelling and pain
Rash
This list is not all-inclusive. Please see your doctor for any symptom that is severe or concerning.
Follow up with a doctor if symptoms do not improve within a few days, get worse, or if you or your child have recurrent sore throats.
There is much more to learn: www.cdc.gov