From ignorance. This can only be fought by spreading information about true depression. Autists also get it: now on the internet they often call autistic silly or just strange personalities, and not autistic patients. People need to understand that depression cannot be simply called a bad mood and a temporary loss of energy. Calling such conditions "depression" they harm, first of all, those who are really sick or do not yet know that they are sick. Because of such a superficial attitude, patients cannot even admit to themselves and others what is happening to them, to somehow designate their condition, because they will most likely be told "get busy", "have fun", "you are just lazy "etc.
This is a pretty tricky question. In my opinion, in the modern world, people have softened (this is not bad, we just became softer), they take all adversity closer to their hearts and much more serious. It seems to me that people call any sadness depression for two reasons: 1) they themselves believe in it; 2) they do not know what depression is - People want to be pitied, comforted in such moments. Therefore, they are looking for louder words to describe their condition, although depression is not sadness, but a lack of will and desire
And how to deal with this fear?