Original: A more general medical and neurological examination may be needed to rule out medical illnesses which may rarely produce psychotic schizophrenia-like symptoms, such as metabolic disturbance, systemic infection, syphilis, HIV infection, epilepsy, and brain lesions.
Simplified: Some of these conditions are  such as metabolic disturbance, systemic infection, syphilis, HIV infection, epilepsy, and brain injuries.