Showing my ignorance but I struggle to grasp how people can have both when so many behaviours on each side seem at odds with one another.
I have a friend with ADHD, I suspect I lean more toward autism than anything.
We both obsess over an interest, but she is bored after a while and moves on to another one or doesn't have anything for a while, whereas if you try to pull me away from my one - ever (even to something else I'd logically be interested in), it stresses me out and I get angry if the disruption persists when I'm trying to do something else.
Her house is always wild chaos, whereas I'm stressed if there's a plate on the side instead of where it belongs with the other plates.
If she has an appointment in the middle of the day she spends all morning unable to do anything until the appointment, or she forgets the appointment entirely.
If she starts a task she's likely to get distracted by something else in the room she walks into, whereas I cannot stop until I have completed the task in full (which again is annoying for people when they try to interrupt me or ask me to do something else in the middle of me doing something).
She forgets to eat and will just eat anything when she remembers whereas I like to buy the same foods with the same numbers of things so I know they will last exactly a week.
If she forgets to text me back she's really guilty and apologetic about it because she sees it as an ADHD thing and is paranoid people she cares about will think she's deliberately ignoring them, whereas I'm not bothered as I don't take it personally or think about it again.
I know everyone is different and there are different types of ADHD and we are just two examples but I can't understand how having both works.