Try drinking water for one, next are you vaping propylene glycol? If so, you may be sensitive to that, especially if you are itching. Is your nicotine too high? Get yourself some lower strength juice to go back and forth with. Try holding vapor in your mouth and exhaling it out your nose and mouth. Don't worry, you will still get your nicotine! Keep drinking water! I vape the most late at night when I am tired, that's my night owl instinct to stay awake, and when I wake up in the morning, my throat feels like I smoked a whole pack of cigarettes and I am pretty hoarse. I found keeping a glass of water on my nightstand so I can take sips throughout the night helps my throat in the morning.