Mental Health Evaluations: A mental health evaluation gives a picture of the way a person feels, reasons, thinks and remembers through a series of questions and physical tests. Based on that, a professional can diagnose a number of mental disorders and understand an individual’s mental health needs to determine a treatment plan or path to recovery. An evaluation can also help rule out a physical cause for the health symptoms. An unusual drop in functioning at work or school and in daily activities, changes in sleep or appetite, loss of desire, apathy, withdrawal or loss of interest from activities or feeling disconnected from surroundings are some symptoms.