One thing that gets ignored a lot when it comes to mental illness is conflicting symptoms. I sleep both too much and not enough. There will be weeks or months where I’m averaging three to four hours of sleep on a weekday, but on weekends I sleep until 1 pm. Some days I don’t eat my first meal until 4 or 5 pm, while other days I comfort eat all day. All of those are symptoms of depression, and none of them invalidate each other. Manifestation of symptoms can change as a person ages, but it can also change day to do depending on other factors in a person’s life.