According to Wikipedia “a phobia is a type of anxiety disorder, usually defined as a persistent fear of an object or situation in which the sufferer commits to great lengths in avoiding, typically disproportional to the actual danger posed, often being recognized as irrational“.
There are a number of common phobias such as closed-in places, heights, driving, flying, insects, snakes, and needles. Having said that, there is a long list of phobias that show us that we can be afraid of almost anything. Often phobias develop in childhood, but they can also develop later in life.
Generally, people with phobias realize that the phobia is irrational, but can’t control that feeling of being afraid. Just thinking about the feared object or situation may make the person feel anxious, the heart beat goes up, they feel dizzy, uncomfortable, want to cry or feel faint. When being exposed to the stimulus that causes the phobia, people feel overwhelmed and have a sense of terror.