Pain can be defined as the body’s reaction to a stimulus the effect of which is perceived as discomfort, i.e. an unpleasant feeling. Pain is associated with something unpleasant and abnormal, but it is also a defense system – it gives information about the temperature that can damage our body, or too much pressure on the tissues. We can divide the pain into acute pain, i.e. the pain that occurs under the influence of a strong, sudden stimulus. It is the body’s defensive reaction. There is also chronic pain that causes the excitability of the body’s cells to change, to create new nerve connections and to deal with the phenomenon of the so-called pain memory. There is a saying that you get used to the pain. Nothing could be more wrong! Pain receptors perceive stimuli in the same way all the time, only the discomfort itself may become weaker or stronger.