Table 2: Comorbid conditions in patients with low-flow priapism*.

() Mental illness    Substance abuse 29  Bipolar 10  Schizophrenia/schizoaffective 5  Depression 4  Other 3 Neurological injury    Head injury only 8  Spinal cord injury only 4  Head and spinal injury 3 Hypertension 8 HIV 4 Sickle cell anemia/trait 3 Malignancy, active 2 Hyperlipidemia 2

* Some patients with multiple diagnoses.