Hyperglycemia in the setting of antipsychotic use has been reported mostly with olanzapine (Zyprexa) but does occur with other antipsychotics. A recent study from the NYC medical examiner's office details 17 deaths of DKA due to antipsychotics and found that (from highest to lowest incidence) quetiapine > olanzapine > risperidone were the atypical antipsychotics found with these deaths.
Remember hyperglycemia occurs with patients on antipsychotics and can lead to hyperglycemia hyperosmolar coma or DKA. Both can be lethal.
