I’m looking for a book about a professional with a trauma related to his profession.

I'm thinking of stories about people who, after some bad event, develop anxiety triggers related to basic elements of his/her occupation .

For example, cases like:
A detective who develops a great fear of weapons.
A doctor who develops a fear of blood.
A pilot who becomes afraid of heights after a bad experience.
A scientist who needs to carry out research on something that is causing him discomfort.