You may love or loathe feet, prefer a button nose over a Roman one or wish your skin wasn't starting to sag as you age, but there's a difference between a preference for what you find attractive (or unattractive) about yourself and others and having an extreme fear of those feet or noses. Geniophobia is one of those fears -- the fear of chins. Not the fear of a developing a double chin, but the fear of looking at and touching the body part, whether it's your own or one belonging to a stranger. It may sound strange, but those who suffer from phobias know that the fear is irrational. Luckily, treatment such as talk therapy, exposure therapy and medications can help patients overcome most phobias.