Many people live with some hidden fear or sometimes totally unknown irrational looking phobia, the common types are :
Social phobia,(anthropophobia),
Flying (aerophobia),
Fear of insects (entomophobia),
Fear of heights (acrophobia),
Fear of death (necrophobia),
Fear of enclosed spaces (claustrophobia),
Fear of public speaking (glossophobia),
Fear of germs or contamination (mysophobia),
Fear of infection (molysmophobia)
Actually these are only few of the many possible things/situations which cause fear sensation to individuals, however one thing is certain, all these fears/phobia force a person to confine his total self growth and can even make him look embarrassed in front of friends and others.