When you burst out in tears, for no reason?
Flashbacks come from nowhere, and set you off on one,........ then your on the downward spiral, no sleep, so point in trying.
Your whole mood changes and no matter what you do, nothing is going to pull you out, the worst thing is that you know what's going to happen, but you have no way of stopping it.
Your on a runaway train that nobody can stop, and the driver just sits by the railway tracks, waving you good bye!