An unreasonable fear is a fear that is not justified by actual danger or is out of proportion to that danger. It severely restricts your life, and may force you to take extreme measures to avoid whatever triggers it. Anxiety is about fear, and we all get anxious at some time. It's a natural reaction in all of us, and keeps us safe.
People can develop an unreasonable fear about any object, whether animate or inanimate, and about any situation. They can be roughly divided into different types:
specific fears about any animal, flying or germs);
specific situations (the dark, heights, enclosed spaces, being alone or falling);
social fears (about meeting, speaking to or eating in front of other people), and illness (about heart trouble, cancer or losing a limb).
People with unreasonable fears try to avoid what they are afraid of. If they cannot, they may experience
Panic and fear
Rapid heartbeat
Shortness of breath
Trembling
A strong desire to get away