Not unique to ADHD, perhaps, but the added step is a bigger deal to those with ADHD. Having to stop what I'm doing to make a call makes it more likely that I won't complete my original task. I have trouble completing tasks on a daily basis so needless interruptions like this make me feel more annoyed than would probably be considered reasonable by someone without ADHD .There's also nothing that's terribly unique to ADHD because our symptoms are things that happen to most non-adhd people occasionally turned up in frequency and severity to a debilitating degree.