Have a bit sore & cobblestone throat, tonsils are normal. have a history of post nasal drip & allergies. started anti-allergic. can this be triggered due to heating & dry air?

Dry air may cause some discomfort in your throat with mouth breathing during sleep but symptom is short-lived, resolving after breakfast without apparent change in your pharyngeal area. Cobblestone throat results from irritation in your throat because of postnasal drip from infections and allergic reactions. The bumps go away once what’s causing the irritation resolves.