You know you have PTSD when you've had several nights of disturbed sleep, so you finally succumb to taking a sleep aid.
You stand over the sink, toss the pill towards the back of your mouth and take a big swig of water to chase it down. Then you turn 180' and face the cook stove to see if your dinner is ready. It's not: the burner wasn't turned on. So you turn on the burner, then turning back to the sink you ask yourself, "Why did I turn around? What the heck did I need at the sink?"
Suddenly, your mind recalls: "Oh, yea, I needed a sleep aid".
The pill is in your hand and as you bring it to your mouth something tells you to cuss: "S#!T, wait a minute!" Then ask, "Didn't I just take one?" Did I or did I not?" Then cuss again: "
Cr@p!!! I can't remember." So you decide to put the pill back in its bottle because if you already took one, two is going to knock you on your a@@!!! And if you didn't take one before, and you're having this kind of memory problem, well, then these little pill are stronger than you think, so better not.