"While we don't know exactly why or where phobias originate, they are a type of mental illness ... people suffer from the fear of the number 8, or octophobia, and the fear of 13, triskaidekaphobia ...
Live Science on MSN15d
What counts as a phobia?Specific phobias are out-of-proportion fears to objects, animals or situations, and fortunately, they can be treated.
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