For 5 days, I have an intense pain when I turn my head to the left. The pain does not seem to want to leave. I would even say that it intensified a little. I took 3 extra-know acetaminophen this morning and no change. What causes this pain according to you?

I am glad that you intend to see a doctor this week. In the meantime, please avoid taking too much acetaminophen and do not exceed the maximum dose of 4 grams per day. Best regards,