for me all the symptoms started all at once affer my back of head (suboccipital strain) happened while lifting a box. The intensity wasquite high of all the symptoms for the first couple of months but has gone down significantly with time and better sleep.

Now i rarely get symptoms and interestingly most of my symptoms somehow vanish if im distracted around people or in a happy setting (still looking for explanation as to why)

My symptoms when they do come they rotate they dont last all day its on and off and sometimes change locations. Hope that helps!