Mental illness is not always noticeable. In fact, most people who have a mental illness go through life looking like everyone around them.
This can be deceiving. For myself, I may be having a flashback or hearing parts having an internal meeting. There may be the start of a panic attack or a feeling that I want to run away.
I hate when people say I look great so I must be doing well. Sometimes I wished that they would ask me how I am doing. Even then, do they really want to hear about all of my troubles.
A physical illness is harder for people to turn away from. It is sometimes more accepted. I wish that I could talk about what I am going through with other people, yet I feel like I have to keep it bottled up. Keep it hidden!