Using the analogy of simmering volcanos, this article appears to have somewhat exaggerated the scientific findings by putting a stronger emphasis on the severity over the combined nature of this biotype. As many neurodevelopmental disorders, ADHD is known for its heterogeneous traits which makes the existance of a combined type much less surprising than it sounds. This article has also not taken into account limitations of the study related to cohort bias, which the orginal article has asknolwedged.