The throat canker sore is among the less frequent of the mouth canker sores.
A throat canker sore can be located anywhere in the throat, even in the back of the throat.
Unless they are huge or in large numbers, canker sores in the throat are less painful than other mouth canker sores because you can't bit them and they are less subject to irritation when you speak. But if they are badly located in the throat they make swallowing difficult.
If you often have canker sores in the throat, AftaZen is a preventive treatment that can keep them away from your throat. Learn how: