The irrational fear is called a phobia; the experience or object that triggers a phobia could be called a phobic experience or object.
Phobia: a fear of a specific object or activity.
An irrational fear is a phobia.
phobia
phobia
Phobia
Phobia
As its name suggests, a specific phobia is the fear of a particular situation or object
As its name suggests, a specific phobia is the fear of a particular situation or object
An exaggerated or irrational fear of time
An exaggerated or irrational fear of baldness.
An exaggerated or irrational fear of marriage.
From Webster's dictonarypho·bianoun \ˈfō-bē-ə\ Definition of PHOBIA: an exaggerated usually inexplicable and illogical fear of a particular object, class of objects, or situation
Symmetrophobia: An exaggerated or irrational fear or dislike of symmetry
Like all phobias, phobophobia is an exaggerated fear response. While in other phobias, the irrationally heightened response focuses on a specific object or situation, in phobophobia, the fear is of the fear response itself.
social embarrassment
Traumatophobia is an exaggerated fear of having an injury. It is treated by a psychiatrist. A person could imagine they have an injury or fear they will be injured.
Hodophobia is an exaggerated or irrational fear of travel. The former answer was dystichiphobia, but that answer was incorrect and insensitive. Dystichiphobia is an intense fear of something that poses no actual danger.
The assumptions may be exaggerated.