Be very afraid: Oddest phobias

Many people believe Friday the 13th to be a day of bad luck. The fear of Friday the 13th is called friggartriskaidekaphobia. The word was coined in 1911 and became mainstream in 1953. Although there is a movie called "Friday the 13th," the superstition dates back to biblical times. Some believe 13 is an unlucky number because there were 13 people at the Last Supper; and Fridays have been associated with many disasters since the 1800s. (iStock)

From ‘True Blood’ to ‘Twilight’ – vampires are all the rage these days. But the very thought of these bloodsuckers is enough to drive some people over the edge. This phobia is called sanguivoriphobia, which literally means fear of blood eaters – or in other words, vampires. <a href="http://twitter.com/drmannyonfox">Follow Fox News Health on Twitter!</a> (iStock)

Perhaps the oddest fear of all – chrometophobia, or the fear of money. Who in their right mind is scared of money? (AP)

Those who suffer from ephebiphobia, a fear of teenagers, should steer clear of arcades and movie theaters. <a href="http://twitter.com/drmannyonfox">Follow Fox News Health on Twitter!</a> (iStock)

Suffering from somniphobia? You have a fear of sleeping. Aren’t you tired? (iStock)

Hard to imagine that some men might actually have medorthophobia, a fear of an erection. <a href="http://twitter.com/drmannyonfox">Follow Fox News Health on Twitter!</a> (iStock)

You won’t be the smartest person in the room if you have sophophobia, or a fear of learning. (iStock)

Check with your significant other to make sure he/she doesn't suffer from anthophobia, or a fear of flowers. (iStock)

If you are dipsophobic, you likely aren’t raising any glasses: You are scared of drinking alcohol. (iStock)

Quite possibly one of the oddest fears we’ve come across: If you know someone who suffers from alliumphobia – a fear of garlic – you better not take them to an Italian restaurant.

A glass of Chardonnay or Merlot is off limits for those who have oenophobia, or a fear of wines. (iStock)

Heliophobia is the fear of the sun. If you suffer from this, you won't be going to the beach anytime soon. (Unspecified)

Have lachanophobia, or a fear of vegetables? We'll bet you aren't eating a salad anytime soon.

It must be a pretty quiet world for those who have melophobia - a fear of music. Do they put headphones on and listen to silence?

Nomophobia is a term first coined by British researchers during 2008 to denote people who experienced anxiety when they had no access to mobile technology—such as their cellphones. People who are said to suffer with nomophobia report being unable to turn their phones off—ever. They worry over running out of battery power. They constantly check for new emails and text messages and calls. And they don’t even want to go to the restroom without their phones. <a href="http://www.foxnews.1eye.us/health/2012/09/21/why-mobile-phone-addiction-is-now-on-rehab-menu/">Click here for more on this fear. </a>

If you suffer from arachibutyrophobia, you have a fear of peanut butter sticking to the roof of your mouth. No PB&J sandwiches for you!