• A throat with an ulcer in it."I've got a horrible ulcer in my throat!" is Copyrighted by Flickr user: eyesnightclosed under the Creative Commons Attribution license.
  
  

Signs of Infection

• If you develop a sore throat along with a rash, headache, fever and swollen tonsils, it's likely a sign of a more serious infection like tonsillitis or strep throat.
  
  

Strep Throat

• A bacterial infection, untreated strep throat can lead to complications like sinusitis and ear infections. It may also contribute to kidney inflammation and rheumatic fever.
  
  

Mononucleosis

• Untreated mononucleosis can lead to sore throat complications that include anemia, hepatitis and nerve damage. Besides a sore throat, signs of mononucleosis include fatigue, swollen lymph nodes and night sweats.
  
  

Treatment

• Your physician may prescribe an antibiotic to treat a sore throat caused by bacteria. Sore throats caused by viruses are usually not treated and allowed to resolve on their own.
  
  

Considerations

• After your sore throat has healed, replace your toothbrush. This prevents reinfection.