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Not every change in mood, thinking, or behavior is a mental health condition. Brain diseases, injuries, and medical problems can cause symptoms that look like depression, anxiety, or psychosis. Recognizing when a medical or neurologic cause may be involved is a key skill for Social Workers, and it’s a frequent theme on the ASWB exam.
This guide explains neurologic and so-called organic disorders, how the DSM-5-TR classifies them today, how to tell delirium, dementia, and depression apart, and practice questions to help you prepare.
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Quick answer: neurologic and organic disorders on the ASWB exam
- “Organic” is an outdated term for mental symptoms caused by brain disease or a medical condition. The DSM-5-TR uses neurocognitive disorders and mental disorders due to another medical condition.
- Key exam rule: rule out medical causes first. New or unusual symptoms call for a medical evaluation.
- Delirium: sudden onset, fluctuating attention and awareness, often reversible. It’s a medical emergency.
- Dementia (major neurocognitive disorder): gradual, progressive cognitive decline.
- Social Workers recognize warning signs, refer for medical evaluation, support clients and caregivers, and advocate for services. They don’t diagnose medical conditions.
Jump to: The Basics · DSM-5-TR Terms · Delirium, Dementia, or Depression? · Medical Look-Alikes · The Social Worker’s Role · Practice Questions · FAQs
1) What Are Neurologic and Organic Disorders?
| Term | What It Means |
|---|---|
| Neurologic disorders | Conditions of the brain, spinal cord, and nerves, like stroke, epilepsy, multiple sclerosis, Parkinson’s disease, traumatic brain injury, and dementia |
| “Organic” disorders | An older term for mental symptoms with an identifiable physical cause, like brain disease, injury, infection, or a medical or substance-related condition. It was contrasted with “functional” disorders that had no known physical cause. |
The two categories overlap heavily. A stroke, for example, is a neurologic event that can also cause depression, personality changes, or cognitive decline. For the exam, the key takeaway is the same: when symptoms may have a physical cause, a medical evaluation comes first.
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2) How the DSM-5-TR Classifies These Conditions
The DSM no longer uses the term organic disorders. Instead, you’ll see these categories. Learn more about the DSM-5-TR and the ASWB exam.
| DSM-5-TR Category | What It Includes |
|---|---|
| Neurocognitive disorders | Delirium, mild neurocognitive disorder, and major neurocognitive disorder (formerly called dementia), with the cause specified, like Alzheimer’s disease, vascular disease, Lewy bodies, frontotemporal degeneration, traumatic brain injury, Parkinson’s disease, or HIV |
| Mental disorders due to another medical condition | Psychotic, depressive, bipolar, anxiety, and other disorders caused directly by a medical condition, like a thyroid disorder or brain tumor |
| Personality change due to another medical condition | A lasting change in personality caused by a medical condition, like frontal lobe damage after a head injury |
| Substance or medication-induced disorders | Symptoms caused by intoxication, withdrawal, or medication side effects |
3) Delirium, Dementia, or Depression?
Telling these three apart is one of the most commonly tested skills in this area, especially with older adults.
| Feature | Delirium | Dementia (Major NCD) | Depression |
|---|---|---|---|
| Onset | Sudden, over hours to days | Gradual, over months to years | Often linked to a loss or change |
| Course | Fluctuates through the day, often worse at night | Slowly progressive | Mood is persistently low |
| Attention and awareness | Impaired | Usually intact until later stages | Usually intact, but concentration is poor |
| Memory | Impaired, along with confusion | Memory loss, often hidden or minimized by the person | Complains about memory problems, and may give “I don’t know” answers |
| Reversible? | Often, when the cause is treated | Usually not, though some causes are treatable | Yes, with treatment |
| Common causes | Infection, like a urinary tract infection, medications, dehydration, surgery, or withdrawal | Alzheimer’s disease, vascular disease, and other neurodegenerative conditions | Biological, psychological, and social factors |
| Urgency | Medical emergency | Needs medical evaluation | Needs assessment, including suicide risk |
These conditions can also overlap. People with dementia are at higher risk of delirium, and depression is common in early dementia.
4) Medical Conditions That Can Look Like Mental Health Disorders
| Condition | Symptoms It Can Cause |
|---|---|
| Hypothyroidism | Depression, fatigue, slowed thinking, and weight gain |
| Hyperthyroidism | Anxiety, irritability, weight loss, rapid heartbeat, and insomnia |
| Vitamin B12 deficiency | Depression, memory problems, and confusion |
| Low blood sugar | Anxiety, confusion, irritability, and sweating |
| Traumatic brain injury | Personality changes, impulsivity, irritability, depression, and memory problems |
| Stroke | Depression, aphasia, emotional changes, and cognitive impairment |
| Brain tumor | Personality changes, headaches, seizures, and cognitive changes |
| Parkinson’s disease | Tremors, slowed movement, depression, and later cognitive decline |
| Multiple sclerosis | Fatigue, depression, mood changes, and cognitive changes |
| Epilepsy | Seizures, and sometimes mood, anxiety, or perceptual changes |
| Infections | Sudden confusion or behavior changes, especially in older adults |
Red Flags That Suggest a Medical Cause
- Symptoms that start suddenly, especially later in life
- Confusion, disorientation, or changes in alertness
- Physical symptoms, like headaches, tremors, seizures, or weakness
- A recent head injury, new medication, or illness
- Symptoms that don’t fit a typical pattern for a mental health condition
5) The Social Worker’s Role
| Role | What It Looks Like |
|---|---|
| Recognize and refer | Notice warning signs and refer for medical or neurological evaluation. Social Workers don’t diagnose medical conditions. |
| Assess | Complete a biopsychosocial assessment, including medical history, medications, and functioning, and use cognitive screening tools when within your training and role. |
| Communicate effectively | Use simple language, give extra time, and use visual aids or alternative communication for clients with aphasia or cognitive impairment. |
| Support caregivers | Provide education, respite resources, and support for caregiver stress. |
| Plan for the future | Help with advance directives, powers of attorney, and long-term care planning while the client can participate. |
| Advocate | Connect clients to services and accommodations, and protect their rights and dignity. |
| Collaborate | Work with physicians, nurses, neuropsychologists, and therapists. |
6) Practice Questions
Question 1: A 55-year-old client has become increasingly forgetful over the past year. She misplaces belongings, struggles to recall recent events, and has difficulty with complex tasks she used to manage easily. What should the Social Worker do FIRST?
A) Tell the client she likely has Alzheimer’s disease
B) Refer the client for a comprehensive medical evaluation
C) Begin cognitive behavioral therapy for depression
D) Recommend memory games to improve recall
Correct Answer: B) Refer the client for a comprehensive medical evaluation
Rationale: Gradual memory loss and difficulty with complex tasks can point to a neurocognitive disorder, but they can also be caused by depression, thyroid problems, vitamin deficiencies, medications, or other treatable conditions. The Social Worker should refer for a medical evaluation rather than diagnose. Starting treatment for depression or suggesting memory games skips the evaluation needed to find the cause.
Question 2: A Social Worker visits an 82-year-old hospital patient who was alert and oriented yesterday. Today, she is confused, cannot focus, and is seeing things that aren’t there. What should the Social Worker do FIRST?
A) Notify the medical team right away
B) Document the symptoms as signs of dementia
C) Arrange a psychiatric consultation for psychosis
Correct Answer: A) Notify the medical team right away
Rationale: A sudden change in attention, awareness, and perception points to delirium, which is a medical emergency often caused by infection, medications, or dehydration. The medical team needs to know right away. Dementia develops gradually, and labeling the symptoms as psychosis could delay medical treatment.
Question 3: A client with no history of mental health concerns reports new anxiety, irritability, trouble sleeping, weight loss, and a racing heart. What should the Social Worker do FIRST?
A) Refer the client for a medical evaluation
B) Teach the client relaxation techniques
C) Diagnose generalized anxiety disorder
Correct Answer: A) Refer the client for a medical evaluation
Rationale: New anxiety along with weight loss and a racing heart can be caused by a medical condition like hyperthyroidism. Ruling out medical causes comes first. Relaxation techniques may help later, and a diagnosis shouldn’t be made before medical causes are ruled out.
Review key terms with our free ASWB flashcards and use our question stem breakdown and six-step answer strategy. Want more practice? Start with our free ASWB practice questions. Agents of Change packages also include hundreds of practice questions with rationales and four full-length, 122-question practice exams.
7) FAQs: Neurologic and Organic Disorders on the ASWB Exam
What’s the most important thing to remember for the exam?
Rule out medical causes first. When a question describes new, sudden, or unusual symptoms, especially with physical signs or in an older adult, the best FIRST step is often a referral for medical evaluation.
Do I need to know specific neurologic diseases?
Know the basics: delirium vs. dementia vs. depression, the main causes of neurocognitive disorders, and common medical conditions that cause psychiatric symptoms. The exam focuses on recognizing warning signs and responding appropriately, not on medical treatment.
How should I communicate with clients who have cognitive or communication impairments?
Use clear, simple language without jargon, speak slowly, give the client time to respond, and use visual aids or alternative communication when needed. Involve the client in decisions as much as possible, and include caregivers with the client’s consent.
8) Conclusion
Neurologic and medical conditions can cause changes in mood, thinking, and behavior that look like mental health disorders. For the ASWB exam, know the current DSM-5-TR terms, how to tell delirium, dementia, and depression apart, and the red flags that call for a medical evaluation. Above all, remember to rule out medical causes before assuming a mental health diagnosis.
► Learn more about the Agents of Change course here: https://agentsofchangeprep.com
About the Instructor, Dr. Meagan Mitchell: Meagan is a Licensed Clinical Social Worker and has been providing individualized and group test prep for the ASWB for over 11 years. From all of this experience helping others pass their exams, she created the Agents of Change course to help you prepare for and pass the ASWB exam!
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Disclaimer: This content has been made available for informational and educational purposes only. This content is not intended to be a substitute for professional medical or clinical advice, diagnosis, or treatment.
