Interesting symptoms. The coffee consumption, mood swings and cyclical depression and also symptoms other commenters described like needing lists for everything or overthinking things are a perfect match for someone close to me. The only thing missing is some-kind of uneasiness within crowds.
But that person was actually diagnosed with "Sensory Processing Disorder".
I'm glad that people are more aware of ADHD and because of that receive proper medication. On the other hand the symptoms of ADHD can be very similar to other disorders. Many neurological problems overlap and someone having a dysfunction in one area could also have a dysfunction in others.
So to all commenters in here, be aware that a label of ADHD may only be a part of the full picture.