It could be said that mathematics is the language of physics. That is another way of better understanding what is physics. Numerical values, units of measurement, and similar concepts are all mathematical in nature, and are used to describe physical quantities in the most accurate and precise manner.
In brief: Cough headache. There are a couple of possibilities. Coughing can raise the pressure inside your head, which can cause pain sometimes. There is also a poorly-understood entity called the primary cough headache,  that is associated with coughing, straining, laughing, crying, etc.
besides bending and coughing, I get the pressure in my head feeling which happens when I change position (bend over, lie on my stomache or whatever might cause pressure) the pressure feels like it builds with each pulse to the point I hear it loud in my ears and it lasts for a while.e: headache from bending over and cough. Hey, I have exactly the same thing, a dull pain in the back of my head when I cough. I've noticed that it is worse when I eat sugar.