Table 1.

Patient groups of behavioral problems due to neurological issues regarding abnormalities found in neurological examination and laboratory and imaging work-up.

Group	Abnormalities in Neurological Examination	Abnormalities in Laboratory or Imaging Work-Up	Examples
Group 1	+	+	Brain tumors, brain ischemia, traumatic injuries, etc.
Group 2	+	−	Lysosomal storage diseases, degenerative problems
Group 3	−	+	Tumors of frontal regions of the brain
Group 4	−	−	Idiopathic epilepsy, mild traumatic brain injury, transient ischemia