I've been noticing something weird every morning when I get up. After I wash my face with hot water, I notice something like coldness coming from my throat, and it's been happening for months. Plus, whenever I eat something cold or get exposed to cold weather, my throat gets all uncomfortable, like I'm going to catch a cold. Is there some special test I should look into to figure out what's going on?

That could be due to allergy,try to identify the allergen and avoid it, visit Physician for evaluation and appropriate management