Phobia

Phobia : is an irrational, intense and persistent fear of certain situations, activities, things, animals, or people. The main symptom of this disorder is the excessive and unreasonable desire to avoid the feared stimulus. When the fear is beyond one's control, and if the fear is interfering with daily life, then a diagnosis under one of the anxiety disorders can be made.

Example, a person who has been bitten by a dog during his/her tender years, might fear of dog for the rest of his life. This can also be applied on someone who has experienced a near-death car accident. Due to emotional distress, he might not be able to drive a car forever. So different people may have different phobia: some of it phobia against closed place, insects, snakes etc.  

I also know someone who has a phobia against a "Favored opponent" whenever he play Starcraft II. When this occurred, he will say "Favored lagi bile nak lawan nubs ni" - or in English: "Wtf? Again another favored opponents, we need more Noob NA player".

Remark: Starcraft 2 is a sequel to the award-winning 1998 video game StarCraft, the game was released worldwide on July 27, 2010.