According to the National Alliance on Mental Illness (NAMI), approximately 1 in 5 adults in the United States experience some type of mental disorder in a given year. This means that, in a population of over 325 million people, over 43 million people will experience some form of mental health issue within a year. Among those that do experience a mental disorder, 9.8 million of those will experience a “severe” mental disorder meaning that it dramatically interferes or limits their ability to function in their everyday life. Of all the adults in the United States with a mental disorder, only 41% received mental health services in the past year. For those with a severe disorder, only 63% received any form of treatment or services (NAMI, 2017). Looking at those numbers it is clear to see that the need to identify, de-stigmatize and help individuals living with mental disorders, will impact millions of people.
There are six categories of mental disorders that this chapter will focus on as well as the variety of disorders found within those categories. These categories contain some of the most common disorders that a social worker will encounter in her or his career. This chapter also provides a brief description of the disorders as well as the estimated occurrence, or prevalence, of each one within the United States.
History of Mental Health
Historically, people suffering from a mental disorder have also suffered abuse, experimentation, torture, and even death. As you go forth as a member of the social work profession, it is imperative that you understand how long of a road it has been and how much further the profession needs to go in the ethical treatment of people with a mental disorder. This link to a 27-minute video provides an example of where we were at just a few decades ago. The Willowbrook State School in New York City is one example of a tragic and possibly disturbing look the past treatment of those with a mental disorder and the developmentally disabled.

Willowbrook State Institution
As you can see from the video, the Willowbrook Institute lacked funding, professionals, and knowledge of what their patients needed to be able to live successfully. Unfortunately, the Willowbrook Institute was not an isolated incident, nor was it a new occurrence. Historically, those with a mental disorder have been looked down upon, shunned, stigmatized, vilified, criminalized or tortured. This kind of treatment has been documented as far back as the middle ages of Europe all the way to the mid 1900’s- United States where those with a mental disorder were placed in either hospitals or prisons.
This treatment continued up until 1963 when John F. Kennedy signed the Community Mental Health Act. President Kennedy described it as “a bold new approach”, and provided federal grants to states to construct community mental health centers (CMHC), to improve the delivery of mental health services, preventions, diagnosis, and treatment to individuals who reside in the community. To be able to supply federal funding for these statewide institutions, the Medicaid Act was passed in 1965. This Act allowed community-based care facilities to charge for reimbursement of funds while excluding payments to psychiatric institutions.

JFK signing The Community Mental Health Act
The Community Mental Health Act resulted in a mass “deinstitutionalization” across the country, and by 1980 nearly 75% of the psychiatric hospital population had declined. By 2009 less than 2% of those suffering from a mental health disorder remained in institutions. Unfortunately, this resulted in some unintended consequences. For example, community-based institutions could not keep up with the mass exodus of people from the psychiatric hospitals. This was the result of several factors such as a lack of space within the inpatient and outpatient settings, a lack of funding for proper care, and a lack of funding to improve care facilities. This lack of resources has negatively impacted the care and treatment of adults, children, families, and communities across the country.
Things to Be Aware Of
Having a mental disorder is often compared to having a physical illness (APA, 2015) and the comparison is one that professionals can often overlook. Just as there are varying degrees of physical illnesses, there are also varying degrees of mental disorders. The mental disorders can be managed in similar ways to physical ones. By maintaining medications, therapy, and problem-solving with the individual, social workers can help the person to not only stabilize, but excel in, their life. In fact, there are many successful individuals both in today’s world and throughout history, such as Vincent Van Gogh, who have found ways to cope with their mental disorders. Van Gogh most likely had one, maybe even two, mental disorders. Despite, or maybe because of, these challenges he was able to produce some of the most iconic and famous pieces of modern art to this date.
Being aware of the following mental disorders will allow you, as a social worker to better understand what the person is experiencing and how to help them meet their needs in the best possible way.
While every case is different, it is important to start thinking about some of the ways that mental disorders may present themselves. To assist you in this task some brief case studies have been provided throughout the chapter. These case studies are based on the experiences and case notes of real people and professionals.
All information and statistics following are from the DSM-5 unless otherwise indicated.
Anxiety Disorders:
Anxiety disorders are characterized by shared features like excessive fear (the emotional response to real or perceived imminent threat) and anxiety (anticipation of future threat) and other related behavioral disturbances.
- Social Anxiety Disorder or “Social Phobia” is an extreme fear of being judged by others in social situations. The fear is so intense that it will disrupt or impair the person’s ability to function in their everyday life. There is about a 7% prevalence in the United States for this disorder.
- Generalized Anxiety Disorder is an excessive, often unfounded, feeling of worry about the numerous everyday activities that a person could engage in. Approximately 2.9% of adults in the United States report symptoms or seek treatment for this disorder.
- Phobias are, simply put, an irrational fear of something. You may have heard of arachnophobia (fear of spiders) or acrophobia (fear of heights). In the United States, approximately 7%-9% of the population reports having a specific phobia and around 75% of this population will fear more than one object.
- Panic Disorder is defined as a debilitating fear or anxiety that occurs without any reasonable explanation. It is estimated that 2%-3% of the United States adult population will experience an episode of panic disorder in a year.
Case Sudy: Kristen
Kristen is a 38-year-old divorced mother of two teenagers. She has had a successful, well-paying career for the past several years in upper-level management. Even though she has worked for the same company for over 6 years, she’s found herself worrying constantly about losing her job and being unable to provide for her children. This worry has been troubling her for the past 8 months. Despite her best efforts, she hasn’t been able to shake the negative thoughts.
Kristen has found herself feeling restless, tired, and tense. She often paces in her office when alone. When she goes to bed at night, it’s as if her brain won’t shut off. She finds herself mentally rehearsing all the worse-case scenarios regarding losing her job, including ending up homeless (Case Studies, 2015).
What do you think Kristen might be diagnosed with?
Psychotic Disorders:
Psychotic disorders among the most serious and challenging disorders. This is because these disorders affect an individual’s interpretation of reality which then negatively impacts the person’s ability to function in their environments. Across the spectrum of psychotic disorders there are common symptoms such as hallucinations, delusions, or behaviors that are considered socially abnormal.
- Schizophrenia is a chronic and severe mental disorder that affects how a person thinks, feels, and behaves (NAMI, 2016). These disturbances may present as hallucinations or delusions. Adults in the United States report a lifetime prevalence of 0.3%-0.7%, with an age of onset often occurring in the early to mid-20s.
- Delusional Disorder is the presence of one or more delusions. These delusions must be present for at least one month to the DSM-5 definition for this disorder. The prevalence of this disorder occurs in 0.2% of adults in the United States.
- Schizoaffective Disorder is characterized by schizophrenic symptoms, such as delusions or hallucinations, but with an added component of a mood disorder like mania and depression. About 0.3% of the United States adult population with be diagnosed with schizoaffective disorder in a year (NAMI, n.d.).
Case Study: Martin
Martin is a 21-year-old business major at a large university. Over the past few weeks his family and friends have overheard him whispering in an agitated voice even though there is no one nearby. Lately, he has refused to answer or make calls on his cell phone, claiming that if he does it will activate a deadly chip that was implanted in his brain by evil aliens.
His parents have tried to get him to go to a psychiatrist for an evaluation, but he refuses. He has accused them of conspiring with the aliens to have him killed so they can remove his brain and put it inside one of their own. He has stopped attended classes altogether. He is now so far behind in his coursework that he will fail if something doesn’t change very soon (Case Studies, 2015).
What do you think Martin could be diagnosed with?
Bipolar Disorders:
A bipolar disorder can be defined as a variance in brain functioning that can cause unusual shifts in mood, energy, or activity levels. These shifts interfere with the person’s ability to carry out day-to-day tasks. These disorders can display a range of heightened emotions in the form of manic episodes (extreme ups) to depressive episodes (extreme downs) (NAMI, 2016).
- Bipolar Disorder I is a period of mania presented as persistently elevated, irritable mood, and persistently increased activity accompanied by feelings of euphoria (being excessively cheerful) or feeling “on top of the world.” The prevalence of adults in the United States with this disorder is 0.6%.
- Bipolar Disorder II is a milder form of mood elevation, involving mild episodes of mania, where one feels hyperactive and elated, that alternate with periods of severe depression, feeling down or sad for no obvious reason. Across a one-year span in the United States, about 0.8% of adults will meet criteria for this disorder.
Depressive Disorders:
Depression affects an estimated 300 million people globally and more than 15 million adults (6.7% of the population) in the United States. There are several levels of depression as well as minor levels that co-occur with other disorders or that are brought on by substance use/withdrawal.
- Major Depressive Disorder is a period of low mood for at least two weeks that is present most of the time in most situations. This may look like low self-esteem, low energy, or loss of enjoyment in pleasurable activities. Major depressive disorder will affect about 6.7% of the adult population in the United States (Facts and Statistics, 2016)
- Persistent Depressive Disorder, while lacking the severity of major depression, is a chronic, or ongoing, period of depression, usually for at least two years. Approximately 1.5% of the adult population of the United States will qualify under its criteria (ADAA, 2016)
Case Study: Jessica
Jessica is a 28-year-old married female. She has struggled with significant feelings of worthlessness and shame due to her inability to perform as well as she always has in the past . Jessica has found it increasingly difficult to concentrate at work . Jessica’s husband has noticed that she has called in sick on several occasions. On those days, she stays in bed all day, watching TV or sleeping . He’s overheard her having frequent tearful phone conversations with her closest friend which have him worried. When he tries to get her to open up about it, she pushes him away with an abrupt “everything’s fine.”
Although she hasn’t ever considered suicide, Jessica has found herself increasingly dissatisfied with her life. She’s been having frequent thoughts of wishing she was dead. She feels like she has every reason to be happy, yet can’t seem to shake the sense of doom and gloom that has been clouding each day as of late.
What do you think Jessica might be diagnosed with?
Trauma Disorders:
- Post-traumatic Stress Disorder (PTSD) can be brought on after experiencing, witnessing, or hearing about a traumatic event. This is most often associated with military personnel/veterans or victims of war. However, traumatic events can be shootings, physical assaults, or rape. After a month of being removed from the event a person may experience sleeplessness, increased heart rate, mood shifts, physically lashing out, or any combination of responses. These changes may be brought on by any stimulus in the environment that reminds the person of the terrifying event or from experiencing recurring thoughts about the event. In the United States, about 3.5% of adults will report experiencing some form of PTSD within a given year.
- Acute Stress Disorder can be described as the symptoms of post-traumatic stress disorder lasting for three days to one month. If it lasts for longer than one month, it than meets the criteria for PTSD. Acute Stress Disorder is reported in less than 20% of non-assault related events; it is reported in 20%-50% from related events like rape, assault, or witnessing a mass shooting.
Case Study: Josh
Josh is a 27-year-old male whose fiancée of four years was killed by a drunk driver 3 months ago. She died in his arms in the middle of the crosswalk. No matter how hard he tries to forget, he frequently finds himself reliving the entire incident.
He had to quit his job because his office was located in the building right next to the place of the incident. The few times that he attempted to return to work were unbearable for him. He has since avoided that entire area of town.
Normally an outgoing, fun-loving guy, Josh has become increasingly withdrawn, “jumpy”, and irritable. He’s stopped working out, playing his guitar, or playing basketball, all activities he once really enjoyed. His parents worry about how detached and emotionally flat he’s become.
(DeepDiveAdmin, 2015)
What do you think Josh might be diagnosed with?
Personality Disorders:
A personality disorder is a pattern of inner experiences and behavior that deviates from the expectations of the individual’s culture, is continuous, enduring and inflexible; it often has an onset in adolescence or early adulthood and leads to distress or impairment in the person’s life.
These types of personality disorders are often experienced by people seeking community mental health treatment and the homeless population, both areas social workers are employed. Some personality disorders that you might encounter include:
- Paranoid personality disorder which is a pattern of distrust and suspicion of others’ motives. These motives may be interpreted as malevolent or harmful to the person experiencing the paranoia. Paranoid personality disorder may be as prevalent as 4.4% among adults in the United States.
- Schizoid personality disorder is a pattern of detachment from social relationships and a restricted range of emotional expression. The prevalence of this disorder ranges from 3.1%-4.9% of the United States adult population.
- Antisocial personality disorder is a pattern of disregard for, and violation of, the rights of others. Those who display the symptoms of this disorder may habitually lie, commit aggressive or violent acts with little to no remorse, and violate social norms. The prevalence of this disorder ranges from 0.2%-3.3%.
- Borderline personality disorder is a pattern of instability in interpersonal relationships, self-image, and affect. People with borderline personality disorder may be overly impulsive or not understand social norms. It is estimated that 1.6% to as much as 5.9% of the United States adult population will be diagnosed with this disorder.
- Narcissistic personality disorder is a pattern of grandiosity, need for admiration, and lack of empathy. 6.2% of the adult population will report for this disorder within a year.
- ● Obsessive-compulsive personality disorder is a pattern of preoccupation with orderliness, perfectionism, and control. This preoccupation may impair their social lives, health, or ability to function in the outside environment. The prevalence for this disorder ranges from 2.7%-7.9% in a one-year period among the adult population in the United States.
Practice Settings
There are two main practice settings where you as the social worker are likely to encounter people with mental disorders: inpatient (hospitals, medical & psychiatric) and outpatient (mental health clinics). Though there are some similarities in goals and strategies, the differences are certainly worth noting.
Inpatient services in these settings are provided by social workers who work with individuals or groups to provide treatment in a variety of forms. The inpatient worker also works with friends, family, and employers to help the person return to their outside life. The social worker may advocate and work with other agencies to provide assistance or resources for individuals under their purview of care.
When a patient is ready to leave a psychiatric facility, the social worker may connect them to an outpatient clinic. In these settings, outpatient workers assist the individuals or groups in maintaining healthy functioning in their environment through therapy or clinical activities. The social worker in this setting will conduct therapy or planning sessions, contact outside agencies, and advocate for their client’s best interests.
Vulnerable Populations
While many people living with a mental disorder live fulfilling lives those who have a “severe” mental disorder are considered a vulnerable population. When we refer to people or a population as vulnerable this means it is “the degree to which a population, individual or organization is unable to anticipate, cope with, resist and recover from the impacts of disasters” (WHO, 2017). This vast population overlaps with several other populations that will/have been covered in this book:
- Veterans
- Children
- Poor/Disenfranchised
- LGBTQ+
- Minorities
- Homeless
- Prisoners
- Seniors
Things to Be Aware Of
The field of mental health is not perfect. Studies can only give us so much insight into the symptoms, behaviors, predictors, prevalence and other criteria used in identifying mental disorders. The DSM-5, while a useful tool, is still scrutinized for numerous reasons. For instance, this is the fifth edition of this text meaning that things have changed in definitions and classifications across the decades. The DSM-5, unlike its four previous versions, is being treated as a “living document” and will be amended more frequently in coming years than its previous versions. With this idea of a “living document” in mind, it is important to ask some questions. Is the DSM-5 a tool that attaches “labels” to people, thereby inhibiting the treatment that they seek? Is it a tool used only for insurance purposes? Does the collaboration between various backgrounds help or hurt the cause for proper mental health care? There are many more questions, critiques, and changes surrounding, not just the DSM-5, but therapy styles as well as our ever-improving understanding of the brain and we in the social work profession must be aware of them.
These changes have resulted in improvements to how we approach the concept of “mental disorders” as well as adhere more closely to the social worker core values and perspectives. For example, homosexuality used to be classified as a mental disorder but now we know that is simply not the case. Gender dysphoria is now more closely understood as the anxiety experienced due to the pressures of social norms rather than an internal struggle. There are many other changes, both big and small, between the DSM-IV and DSM-5 that are highlighted here.
But it’s not enough to just be aware of what we do in clinical settings. We also must be cognizant of our understanding of trauma (in its many forms), of a client’s resources and of society’s perception of what a mental disorder is. These things will continue to morph throughout time so it is important to remain vigilant and flexible regarding the many changes that occur in our field.
Current Issues
At the time of this book’s publication in late 2017, there are several pieces of legislation that could have important impacts on the services that social workers and other helping professionals offer. For example, the result of the debate over our national healthcare will have a profound impact on who receives Medicaid, how much the states will receive to supplement the costs of Medicaid funding, and what types of services will be covered. In the State of Michigan, for example, the legislators are looking to implement a bill that would take funding from direct providers like Community Mental Health and direct it towards private organizations. This link gives further description of this bill and will allow you, the reader, to form your own opinions http://www.michigan.gov/mdhhs/0,5885,7-339-71550_2941_76181—,00.html
Regardless of what your decisions or thoughts are on these issues are, the social work profession must always be vigilant to who/what/where/why/when of funding. We must also be aware politically of who’s in charge, what their agenda is, and if it impacts our profession, impacts the people we serve, and if it is in line with our professional ethics.