The Concept of Anxiety
All of Kierkegaard's books have either a preface, dedication, or prayer at the beginning. This book includes a lengthy introduction. "The Concept of Anxiety" was published on exactly the same date as "Prefaces", June 17, 1844. Both books deal with Hegel’s idea of mediation. Mediation is a common thread throughout Kierkegaard’s works. His work up to this point was to show that faith was being mediated by knowledge. Here he takes up the questions of sin and guilt.
Timeline of psychiatry
French physician Bénédict Augustin Morel published "Traite des Maladies Mentales" (2 vols.); the 2nd ed. (1860) coined the term "dementia praecox" (demence precoce) for patients suffering from "stupor" (melancholia).
In 1857 he published "Traité des Dégénérescences", promoting an understanding of mental illness based upon the theory of Degeneration, which became one of the most influential concepts in psychiatry for the rest of the century.