This document discusses common mental health problems and illnesses. It covers major categories of psychiatric disorders including organic disorders caused by physical illnesses or injuries, developmental disorders, and disorders caused by substance use. Specific illnesses mentioned include depression, mania, bipolar disorder, schizophrenia, anxiety, phobias, obsessive compulsive disorder, and conversion disorder. The document emphasizes that when assessing patients, simple questions about the problem, duration, and other symptoms are usually sufficient rather than expecting technical diagnoses. It also notes some challenges in distinguishing problems from illnesses, and stresses the importance of psychiatric nursing beyond just medication administration.