Tic: Lung cancer is painless. So that's not it. You are describing an nervous tic that has more to do with fear than fact. If you can consider cessation-that would be good but it will not stop your apprehension for at least 5 years. Consider Yoga, or some other calming activity. Exercise helps almost everything.Be sure it is safe for you and the go for it!
Answered 2/3/2016
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