Sore throats or pharyngitis can be caused by many things.
Viruses: these can be simple colds or viruses that cause other diseases such as mono.
Bacteria: these infections are caused by specific strains of bacteria. They cause infections such as “strep throat” and can be treated with antibiotics.
Allergies: people with allergies can often have a sore throat that can last for weeks.
Irritation: these can be from substances such as cigarette smoke, dry air, or straining your voice.
Reflux: this is sometimes referred to as heartburn. It is cause by some of the stomach acids coming back up the esophagus and irritating the throat.
Treatment
Take over the counter pain relievers such as Tylenol or Advil.
Gargle with warm salt water.
Suck on hard throat lozenges, candy or cough drops.
Eat frozen desserts such as popsicles.
Drink plenty of fluids. Many people drink warm tea with honey.
Humidify your room as needed.
Prevention
Wash your hands frequently!
Do not share food, drinking glasses, dishes, or utensils.
Avoid things that you know may aggravate your allergies, such as cats.
When to see a provider for your sore throat:
A sore throat lasts longer than a week
A sore throat is severe and you are having trouble swallowing