Arachnophobia is a specific phobia, an abnormal fear of spiders and sometimes other arachnids, such as scorpions and harvestmen. It is among the most common of all phobias. The reactions of arachnophobics often seem irrational to others (and sometimes to the sufferers themselves). People with arachnophobia tend to feel uneasy in any area they believe could harbor spiders or that has visible signs of their presence, such as webs. If they see a spider they may not enter the general vicinity until they have overcome the panic attack that is often associated with their phobia. They may feel humiliated if such episodes happen in the presence of peers or family members.