than you so much for your help, you information was very helpful :)
There are many reasons why a throat can feel that way.
Acid reflux/GERD is one.
Post nasal drip can cause that feeling as well.
For PND you could try a sinus rinse before bed and using a humidifier...if it helps then it's probably PND.
Anxiety/depression can cause this feeling.
Problems with the esophagus can also cause this feeling.
Coughing up phlegm is usually a sign of COPD, smoker's cough, lung infection, asthma, PND, etc.
Stress ( which is generally related to anxiety/depression ) can cause the throat to tighten as well.