Which phobia differs from all others as there is no environmental stimulus but internal sensations similar to psychological symptoms of panic attacks?

Phobophobia is the fear of phobia(s) but more specifically, fear of the internal sensations associated with that phobia and the anxiety which binds it closely to other anxiety disorders, especially with generalized anxiety disorders (free floating fears) and panic attacks.

Phobophobia differentiates itself from other kind of phobias by the fact that there is no environmental stimulus per se, but rather internal dreadful sensations similar to psychological symptoms of panic attacks. The psychological state of the mind creates an anxious response that has itself a conditioned stimuli leading to further anxiety, resulting in a vicious cycle. Phobophobia is a fear experienced before actually experiencing the fear of the feared phobias, its somatic sensations that precede it, which is preceded by generalized anxiety disorders and can generate panic attacks. Like all the phobias, the patient avoids the feared phobia in order to avoid the fear of it.