Yes. ADHD can affect memory formation for both short term and long term memory.

Think about a time you walk into a room and then forget why you're there. You're sure it was important, but for the life of you, you just can't recall why you are there. Now, imagine that it happens constantly. You need to do dishes. Walk to the kitchen, forget, see the dishes, but you still don't remember because you're so focused on trying to remember that the visual cue doesn't trigger a memory. You stand there for a while then decide to do the laundry. You get to your bedroom, forget, and think that it's time to take a nap. So you nap.

My wife has to remind me all the time to do things. I'm not mad at her, it's just that my memory needs a kick start. At work I HAVE to write things down or I will forget to do them and it will reflect negatively on me. I genuinely don't know if I'll ever be able to get a promotion because of this disability. I can't blame a company for not wanting to promote someone who can't function correctly into a position of trust with large sums of money and responsibility over several dozen people.

This disability will NEVER go away. It will NEVER heal. I have to take medication for the rest of my life and if I stop I will become so dysfunctional that I will need near constant babysitting to keep me from causing chaos. ADHD fucking sucks.