streptococcal sore throat: an infection of the oral pharynx and tonsils by streptococcus
infection: the pathological state resulting from the invasion of the body by pathogenic microorganisms
dexamethasone: a corticosteroid drug (trade names Decadron or Dexamethasone Intensol or Dexone or Hexadrol or Oradexon) used to treat allergies or inflammation