How to treat a dry, itchy throat?

Many possibilities: There are many possible causes for an itchy throat. Several types of inflammatory conditions of the skin, allergic reactions, and sometimes bacterial, viral or fungal infections can cause rashes on the skin. Have it evaluated by a professional and get the appropriate treatment.

Try: Honey in lemon juice or sucking on honey lozenges. Even gargling with warm salt water( just enough salt to taste salty) might help. You might have post nasal drip and need a nose spray like Nasonex (mometasone) that just came over the counter if the throat remedies don't work.