Alexithymia may be linked to hyperactivity and impulsivity
Although it sounds like a mental health disorder, alexithymia is simply a term used to describe difficulty identifying and expressing emotions. Although a study from 2013 found a link between alexithymia and ADHD, the correlation only applied to children with hyperactivity and impulsivity, not inattentiveness.
https://www.medicalnewstoday.com/articles/326451.php