From past 2 weeks , whenever I speak for long or whenever I wake up after nap, or sometime when I bow down my head. I feel dryness in my throat. At that time I must drink water , otherwise I feel very much uncomfortable, it seems like choking in throat. And then I have to drink water , then I feel Normal in my throat. I don't have any problem in swallowing anything. This dryness in throat just happens at random.