My friend and I were at the gym on Saturday and he just after he finished a set of squats he got this pain in the back of his head. He said it felt like it was shooting from his upper back up towards his head. The pain would subside but would return once he attempted any other lifts.
Since then the pain seems to return if he does anything slightly strenuous, jogging down stairs for example. He's planning on seeing a doctor as far as I'm aware.
I'm just wondering in the meantime whether anyone else has had any similar experiences, and what the root cause may have been, or maybe someone knows what this is.