Sisimone I had no idea either at the level of discrimination either 
I would never make excuses for behaviours however it's the feeling of attack that runs through this thread which is alarming 
I admit I have been late many times for different things....Uni, work, getting DC out to school, health appointments, you name it. It isn't every time as my symptoms are not the same every day. If I have something on my mind then I'm overly distracted. I will sit procrastinating for ages before starting to get ready. I could be drying my hair and see something out the corner of my eye and stop what I'm doing to go get it. Then get distracted away from that and so on.
Believe me I feel absolutely shit when I'm late for anything. Especially when it affects anyone else. I'll beat myself up if I miss the train to go shopping on my own, as once again I have failed.
You could give me every app, alarm, organiser out there. But if I become distracted at any stage then that's it... I'm off. Some days are worse than others. Some days I feel my medication is working, other days not so much.
I'm not looking for anyone to excuse the behaviour or traits. It would just be nice not to be minimised and made out to be exaggerating.
I always thought these traits were a symptom of anxiety and depression which have plagued me for years. I cried when diagnosed with adhd because it was then I knew I wouldn't "recover" and I was trapped for life. Yes meds can help, therapy and strategies too. But it can take just one thing, one thought then my day snowballs 
Please don't be so harsh to us. We didn't ask for this. Nobody is making excuses, we just don't want to feel attacked.