Is ADHD inherited?

Research has shown that ADHD does seem to cluster in families. Several investigations have demonstrated that children who have ADHD usually have at least one close relative (child or adult) that also has ADHD. At least one-third of all fathers who have ADHD will produce a child with ADHD. With the newer realization that adults may also experience ADHD symptoms, it is not unheard of to have a parent's "problem at my job" be credited to ADHD -- often at the same time their child's diagnosis is being established! Lastly, several studies have demonstrated a number of genes that may reflect a role in altered brain neurochemistry that provide a physiologic basis for this disorder and inheritance pattern.