Dryness
Dryness in your mouth can lead to a sore throat when the inflamed tonsils swell and cause your throat to close up.
A dry mouth is one of many symptoms of dehydration (when you lose too much fluid), and it’s usually caused by not drinking enough water. A dry mouth makes it easier for infection-causing bacteria to pass from your mouth into your respiratory tract because saliva is a barrier against them. Also, a dry mouth may make it harder for you to produce enough protective antibodies against germs that can get past the saliva barrier.
For most people, sore throats aren’t dangerous—though they can be painful if they last more than two weeks. However, some people with chronic sore throats develop severe infections that can spread to other parts of their bodies. If you have a sore throat, see your doctor. They can confirm whether it’s a cold and prescribe an antibiotic if necessary.
