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.
Other causes of a dry cough include: 1  Side-effect of medication â some medicines, particularly those for high blood pressure, can result in a dry cough. 2  Psychological conditions â this is when coughing has become a habit. 3  Nerves and stress â many people cough when they are in a stressful situation.