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.
Common causes of chronic cough include: 1  Postnasal drip â This is a sensation of mucus trickling from the back of your nose down into your throat. 2  It may be due to hay fever, allergies or irritants. 3  How postnasal drip causes a cough is still not clearly understood. 4  In some cases, this sensation may not even be noticed.