There are some illnesses that are obvious via physical symptoms. The various forms of mental illness are very often referred to as invisible illness because symptoms are not always obvious to the naked eye.
I have lived with depression for years. It often speaks for me when I cannot. The problem is that when it speaks for me, it does not speak the truth.
It speaks of my anxieties, my insecurities. It reveals that in spite of all I have worked for and achieved, I am still worth nothing. The people in my life are lying to me. I am worth nothing and the only place I should be is the grave.
If we have a conversation and my depression decides to speak for me, please pardon me. It is not me who is speaking, but one who has taken over my tongue and my thoughts. It is my depression.