Many people see doctors as omnipotent gods able to do all and cure all.
Unfortunately, its is forgotten that doctors are mortals also. They need information from you that cannot be obtained through blood tests, x-rays, or stress tests. In order for a doctor to you help you, communication is necessary. You have to be able to effectively explain your pain, sickness, or affliction to the doctor. You have to understand what a doctor tells you, and you need to ask the right questions.