Apiphobia: Fear of bees.

A phobia is an unreasonable sort of fear that can cause avoidance and panic. Phobias are a relatively common type of anxiety disorder. Phobias can be treated with cognitive behavioral therapy using exposure and fear reduction techniques. In many cases, anti-anxiety or anti-depressant medication proves helpful, especially during the early stages of therapy.

The word "apiphobia" comes from "api-" from the Greek "apis" meaning bee + "phobia" from the Greek "phobos" meaning fear = literally, fear (of) bee(s). Apiphobia is also called melissophobia, since "melissa" is another Greek word for bee.