Even though a canker sore is not dangerous, they certainly can be painful and disrupt your day.
It is one of the most irritating and painful dental conditions affecting people today.
Canker sores in on the throat can wreck havoc on your mood and everyday activities.
The bad part of it is that there is no know cure for it yet.
A swollen and painful canker sore may make it difficult to eat or even swallow.
Usually a canker sore will develop and then clear within 10-14 days.
  However trying to make it through the day can be a long and difficult process.
Learning to recognize a breakout and manage it well can mean the difference between a good day and a bad one for you and your mouth.
  Taking some simple steps can help keep a canker sore that is deep in your throat from becoming even more bothersome.
  Avoiding rough or hard textures like potato chips will prevent them from sticking to the painful areas.
  Stay away from spicy and acidic foods that may burn or sting an open area.
  Using caution when brushing your teeth can also prevent the pain of hitting the sore with your brush.
  Brushing over the area may even cause the sore to burst open if it has not already.
  Taking over the counter pain medication like ibuprofen or acetaminophen may also help lessen your pain.
In certain cases, a dentist may prescribe antibiotic rinses to help clear any potential infection in the sore.
 These rinses can help reduce pain in as little as 24 hours, but you must see a dental professional for evaluation first.