Sneezing is always unpleasant. It comes with sputum, phlegm, saliva and sometimes even snivel secret. Furthermore, a simple sneeze could cause more damage to your organism than just make you or your interlocutors disgusted. Medics have found out that during a sneeze the blood pressure increases highly. Thus, the venous pressure in your head and neck also increases transiently. During this increase the walls of the blood vessels in your veins stretch, which causes great pain. The neck muscles and veins tighten and strain, which might lead to an eventual cracking. If you crack an essential vein, like the carotid artery for example, you could die. Sneezing can cause your great pains, since it can damage your ear drums and even your spine. Trying to stop the sneezing might be even more dangerous. The best way to prevent any damage is to calm down, take a deep breath and exhale, relaxing your muscles and veins.