The fright
The fright is the strong psychological stress as the reaction to something unexpected, sudden. Sometimes it is the consequence of especially serious influence on the nervous system. The fright has a great number of consequences that may cause serious disorders of the nervous system.
Sometimes it may also cause paralysis. In fact the fright is the sudden fear that a person feels having the contact with sudden and strong irritant.
The fright is the reaction of the organism and is the combination of terror and investigatory reflex. Sometimes the result of it may be the stop of heart beating and the death of the person. That is why it is not recommended to frighten your friends as this is one of ways to ridicule people. Sometimes the heart-beating is stopped only for several minutes after which the heart starts its work again.
The night fright known as pavor nocturnus is the diseases that have children at the age of 3-7 years old. It shows itself when in few minutes after going to bed children get up crying loudly and with drops of sweat thinking they are still dreaming. This disease accompanies other kinds of diseases such as flue, depression, etc. Children with sensitive nervous system suffer from pavor nocturnus. Almost always this disease is cured in a short period of time.