You can lie if you want. It will have absolutely no effect on your treatment and it is not a crime to lie to a doctor. In fact I would say today medical professionals get lied to just as often as bill collectors. My wife is in the field and she sees it every day.
If you want to resist the moral implications of lying, consider it forced upon you by an oppressive regime. The same as you would have lied to the authorities under Stalin if you had lived in the USSR.
Tomorrow is the most important thing in life. Comes into us at midnight very clean. It's perfect when it arrives and it puts itself in our hands. It hopes we've learned something from yesterday.