[Update of the multidisciplinary guidelines for anxiety and depression].

The multidisciplinary guidelines for depression, panic disorder and post-traumatic stress disorder have been revised. They incorporate some important changes: algorithms are now based on the severity of the disorders, a 'stepped-care' approach is promoted, so-called basic interventions are required for each algorithm and so-called first-step interventions are advocated for mild disorders. Antidepressants are no longer indicated for mild disorders.