The phobia of phobias is Phobophobia.
Honestly, you can have a phobia of anything! There is even a fear of phobias!
Western phobias are irrational fears and Malaysian phobias are morbid fears.
You get phobias whenever you get scared of something. Thats what a phobia is, when you have a fear for something.
A phobia is a fear of something.
Simple phobia/specific phobia, social phobia and agoraphobia are indeed all anxiety disorders.
The phobia of clowns is called Coulrophobia.
If your phobia prevents you from functioning, then yes it is serious. Phobias can be debilitatiing but they don't have to be.
Phobias do not have a reason they are irrational fears.
Yes his phobia is of spiders
Complex phobias tend to be more disabling than simple phobias because they are often associated with a deep-rooted fear or anxiety about a particular circumstance or situation. Two common examples of complex phobias are agoraphobia and social phobia.
You can find a link to a list of phobias in related links.
There is not a technical term for a phobia of being alive. There are phobias of being buried alive if that's what was meant.