EEG is used in the diagnosis of all except-
"EEG findings are frequently normal or show nonspecific changes in Intermittent expulsive disorder"

EEG may be used in Panic disorder, Catatonia, Generalized anxiety disorder, Schizophrenia, mood disorders (including bipolar disorder), Developmental disorders (ADHD, dyslexia, Autism), Alcoholism, Antisocial personality disorder, Borderline personality disorder and dementia.
Intermittent expulsive disorder
Panic disorder
Anxiety disorder
Bipolar disorder