Aibohphobia

ai·boh·pho·bi·a (ā'bəl'fō'bē-ə)

noun
An anxiety disorder characterized by extreme and irrational fear of palindromes (words that read the same forwards and backwards).
Sadly, the word aibohphobia is, in itself, a palindrome.

Person 1: Hey, what's your name?
Person 2: Bob.
Person 1: AAAAAAAAAAH! *Runs and hides behind sofa*
Bob: Wow.
Person 1: AAAAAAAAAAH! *Runs away and falls down stairs*

Person 1: I think you have aibohphobia.
Person 2: AAAAAAAAAAH! *Runs into oncoming traffic*