May also be called: Tonsillitis; Strep Throat
A sore throat can be caused by many things, from viral infections (most often, the common cold or flu) and bacterial infections (strep throat and some cases of tonsillitis) to seasonal allergies and gastroesophageal reflux disease (GERD).
Many sore throats are due to:
Treatment for a sore throat will depend on what's causing it. Treating an underlying condition (like GERD or allergies) can bring relief, as can home care (like gargling with saltwater, running a cool mist humidifier at night, and avoiding irritants like smoke).
Strep throat requires medical treatment with antibiotics, which will improve symptoms quickly. Untreated strep throat can lead to complications like rheumatic fever (which can cause permanent heart damage), a peritonsillar abscess, scarlet fever, or kidney disease.
Treatment for tonsillitis depends on whether it is caused by a virus or by bacteria. Doctors usually will test for strep bacteria with a rapid strep test or a throat culture. Tonsillitis caused by a virus will go away on its own. If it's caused by strep bacteria, the doctor probably will prescribe an antibiotic. If so, it's important to take all of the antibiotic for as long as prescribed to help prevent complications.
People with tonsillitis or strep throat can return to activities 24 hours after beginning antibiotic treatment if there's no fever and they're feeling better. If someone is still feeling weak, tired, or achy, staying home for another day or two is recommended.
To help prevent the spread of strep throat or tonsillitis to others:
All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.
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