I think this is an ailment that more people - than those with fear of inability to sneeze- suffer from. But fear of not being able to fall asleep and not fall asleep on is not the same thing. The connection between them is simply as follows: The first one includes the second one, or the second is the subset of the first.
Although the above statements are confusing, the horror of insomnia is a constant fact for both propositions.
...not being able to sleep
...To fear of not being able to sleep
...not being able to sleep more
...To fear of not being able to sleep more
.
.
.
...Depression and not being able to sleep
...Vicious circle...
Bla bla bla......
Labels: True fears