phobias. The top 10 most common phobias in the world as of 21st october 2009 are: Acrophobia is the fear of heights, Claustrophobia fear of enclosed spaces, Nyctophobia fear of the dark, Ophidiophobia fear of snakes, Arachnophobia fear of spiders, Trypanophobia fear of injections and medical needs, Astraphobia fear of thunder or lightning, Nosophobia fear of having a diease, Germophobia fear of germs and laslty triskaidekaphobia fear of the number 13 (Fritscher). Anthrophobia is the fear of people