What is the definition or description of: throat blisters?

Aphthous stomatitis: Cold blisters or aphtha, are raw areas that appear on the lining of the inside of your mouth, tongue, throat, and lips. They may commonly appear as a result of a cold, over exposure to sun, other physical or emotional stress. Commonly caused by resurgence of the chicken pox virus in our body, they are self limited and go away within several days.

See an MD: From viruses that cause the common cold to many inflammatory diseases and oral herpes virus, there are a variety of conditions that can cause blisters in the throat. There are too many variables to diagnose over the internet. See an md, and good luck!