Roller Coasters can cause temporary deafness warns the daily telegraph. When a roller coaster car increases or decreases altitude suddenly by going down those long frightening slopes and then back up, there is a sudden difference in air pressure outside the ear and within it. This can create a condition known as barotrauma. Symptoms include short term hearing loss, dizziness, pain, or the feeling that the ear has popped. The advice is to not turn your head to one side during a ride, as this can focus extra pressure on one ear. Flying and deep sea diving are other things that can induce barotrauma.