Fear is an unpleasant feeling of dread in the face of imminent danger, real or imagined. It is often felt to be a situation in which there is little control and whose negative consequences must be avoided at all costs.
Nyctophobia or scotophobia are the names of the fear of the dark, of the night and dark rooms or spaces. At least 10% of the adult population fear the dark. Anxiety and irrational fear are generated by a distorted perception of the brain of the risks that are taken when we cannot see what is around us. In adults, it is considered a phobia and in children, it is part of the fears of the early years.