We have concentrated in this chapter on panic, generalised anxiety, and PTSD in order to illustrate several ways in which fear can become disordered. Two further traditional categories of so-called anxiety disorders—phobias and obsessions—can also be derived from fear. However, we propose that some phobias and obsessions can perhaps be more usefully derived from the basic emotion of disgust and there may be little or no role for fear responses in these cases. Consequently, we talk briefly about fear-derived phobias and obsessions here and continue the discussion in Chapter 9 on disgust.
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