Using a crutch as a crutch

Hi everyone, I have a few mental health blog posts to write, and I am aware that I only occasionally write on this blog.  A lot of people write about mental health so I might only share my most extreme thoughts.  Something I was thinking about that I think is a common topic is about the way the severity of emotional pain from depression or other mental illness is often impossible for other people to understand.  In fact, during the times I feel okay, I almost even can't remember or have any concept of how bad I have felt before.  So I know that it might not be reasonable to expect people who have never had depression to understand when someone is right in front of them with a disorder.  But I have an idea that I think could help all of us, which is for people with depression to consider wearing an arm sling or using a cane or crutches when they are depressed, as kind of a visual representation of the medical nature of the problem.  In a way, it could still add to the underestimation of the pain, but I think it would at least make the existence of the issue be less invisible.  It seems like I am joking, but if people wore a sling and then people asked them about their injury and they said "I can't talk about it," I think people's reaction might be closer to matching the level of sympathy that is warranted and the compassion that is hard to convey when the amount of pain literally is unimaginable.