Hyperfocus is an intense form of mental concentration or visualization that focuses consciousness on a subject, topic, or task. In some individuals, various subjects or topics may also include daydreams , concepts , fiction , the imagination , and other objects of the mind. Hyperfocus on a certain subject can cause side-tracking away from assigned or important tasks.
Hyperfocus may bear a relationship to the concept of flow.  In some circumstances both flow and hyperfocus can be an aid to achievement, but in other circumstance or situations, the same focus and behavior could be a liability, distracting from the task at hand. However, unlike hyperfocus, "flow" is often described in more glowing terms, suggesting they are not two sides of the same condition under contrasting circumstance or intellect.
Conditions unlikely to be confused with hyperfocus - clinical conditions involving clear repetition of words or behaviours, such as obsessive–compulsive disorder (OCD) or trauma ;  and cases of physical brain injury, trauma or damage, such as traumatic brain injury and frontal lobe lesions ;  [ clarification needed ]