Mental disorders are conditions affecting the mind, such as depression, anxiety disorder, and panic attacks. The theme of the first episode of Comic Psychosomatic Medicine is "ED."
Because using letters of the 
alphabet softens its impression.
Weil es als Abkürzung nicht
mehr so negativ klingt.
Perché usare soltanto due lettere 
fa meno impressione.
Porque as letras usadas davam 
uma impressão de coisa mole.