I understand what you're saying and I know you didn't mean it the way that I read it.  I'm really sensitive to this subject.  Not because it plagues my kids, but because it plagues ME!  I was diagnosed with ADHD in my late 20's, but I've had it all my life.  Let me try to explain how it feels when my medication begins to wear off:  things start to get foggy, like you just snapped out of a daze.  I am fully aware of what's going on, but unable to process a response.  This usually begins around 4:00.  By quitting time, my mind has wandered to the evenings festivities....gym, dinner, homework, errands, etc.  BUT I am supposed to be driving.  By the time I get to the first stop, I have made a mental list of things that I need to do at the next stop (most of which I won't remember when I get there), but I'm mentally exhausted.  Meds are fully gone by this point & adding a small evening/afternoon dose, doesn't work for me for other reasons.  But at this point, i feel like the next thing that is asked of me, will be the straw that broke the camels back!  I'm completely overwhelmed!  And start to get frustrated bc I know going to pick up my daughter or going to the grocery store to grab a 'few' things for dinner is NOT rocket science.  Simple things that EVERYONE else gets through is often too much.  I want to cry.  And on a GOOD day, I wonder why I just can't be better.  I wonder why I can't seem to get it together.    It's often a lose lose situation if I wait to take my meds til lunch.  I stay moving at work, but get NOTHING done, but my breakdown doesn't happen until bed time.  Another thing, I don't sleep much.  I mean I go to bed and sleep, but it's not deep sleep.  My brain is just about awake all the time.  I don't turn the tv off at night because the silence gives way to my mind running way out into left field.  However, even though I 'sleep', I can just about tell you the story behind each show that comes on.   I know how frustrating it can be.  But sometimes we can't help it.  We can't even really put a finger on what's wrong.  It's kinda like your GPS going dead 10 miles from your destination and you literally have no clue where you are.  I can literally go from being collected and in control to total chaos and frustration in less than a minute for no apparent reason.  I don't have any advice.  Just wanted to say that we know we're difficult, but we really don't want to be.....