Eating Disorders and Co-Occurring Disorders: Integrated Treatment for the Full Clinical Picture
An eating disorder can affect many parts of a person's life, and it may not be the only concern they are trying to manage. Anxiety, depression, trauma-related symptoms, substance use, neurodevelopmental differences, or relationship difficulties may also shape what a person is experiencing and what they need from treatment.
Understanding these connections can help explain why eating disorder recovery is not always straightforward. The same behaviors may have different meanings for different people, and treatment may need to address several interacting needs without losing focus on the eating disorder itself.
At Empowered Treatment, integrated care means seeing and supporting the full range of a person's needs to provide individualized eating disorder treatment. This page explains which conditions commonly occur alongside eating disorders, how they may interact within a person's life, and how a whole-person treatment plan responds when someone is managing more than one concern.
- A person's eating disorder may occur alongside other mental health, trauma-related, substance-use, neurodevelopmental, or relational concerns.
- Similar eating disorder behaviors can have different or overlapping functions.
- Integrated treatment keeps nutrition, medical care, meal support, and eating disorder recovery central while incorporating other relevant needs.
- Treatment priorities and level of care are based on the full picture of a person's health, safety, functioning, support, and current symptoms.
What Are Co-Occurring Conditions?
Co-occurring conditions are concerns that are present alongside a person's eating disorder and may affect their health, daily life, or path to recovery. These may include formal mental health disorders, trauma-related symptoms, substance use disorders, neurodevelopmental disorders, relational concerns, or significant symptoms that have not yet been given a separate diagnosis.
Eating disorder diagnoses include anorexia nervosa, bulimia nervosa, binge eating disorder, avoidant/restrictive food intake disorder, other specified feeding or eating disorder, and unspecified feeding or eating disorder. Someone may also experience disordered eating that causes significant distress or health consequences without fitting neatly into one diagnosis.
Clinicians may use the term comorbidity when a person meets criteria for more than one diagnosis. The language of co-occurring disorders or dual diagnosis is often used more specifically when a substance use disorder and another mental health disorder are both present. Here, co-occurring conditions is used more broadly to describe the full range of concerns that may shape a person's eating disorder and treatment needs.12
These relationships are not always simple or one-directional. Anxiety may make eating feel unsafe, while restriction and malnutrition can intensify anxiety and rigid thinking. Depression may affect appetite, energy, and routines, while isolation and nutritional instability can deepen hopelessness. Nutritional deficiencies may also affect someone's concentration, sleep, mood, and ability to regulate emotions.
Early detection and early intervention can help someone access appropriate support sooner. But screening and assessment should do more than simply identify psychiatric disorders. The value of assessment is in helping the treatment team understand the full picture of what a person is experiencing, how those experiences are interacting, and what may be making recovery harder to sustain.2, 6
Conditions That May Affect Eating Disorder Recovery
Trauma and Stress-Related Disorders
Someone living with trauma, PTSD, complex trauma, or dissociation may experience fear, shame, numbness, body disconnection, or difficulty feeling safe with other people. Their eating disorder behaviors may have become connected to control, avoidance, emotional distance, or temporary relief.
When trauma and an eating disorder occur together, a person may experience more severe symptoms, greater difficulty in daily functioning, and a more complicated path through treatment and recovery.10, 5
Learn more: Eating Disorders and Trauma: How Integrated Treatment Helps When Both Are Present.
Anxiety Disorders
For someone living with an anxiety disorder, food, fullness, body sensations, weight changes, or eating around other people may begin to feel threatening. Rigid rules or avoidance may temporarily create predictability, even when those behaviors strengthen the eating disorder over time. Understanding what the person is afraid will happen helps treatment respond to more than the visible food behavior.
Depression and Mood Disorders
Depression may affect a person's appetite, energy, sleep, motivation, concentration, and ability to maintain regular eating. Living with an eating disorder may also deepen isolation, shame, hopelessness, or low self-worth. Monitoring nutrition, mood, safety, and daily functioning together can help the treatment team understand what is changing as the person becomes more nourished and supported.6, 2
Substance Use Disorders and Addiction
A person's substance use or addiction may become connected to appetite suppression, emotional avoidance, impulsivity, body concerns, binge eating, purging, or attempts to manage distress. Alcohol or drug use may also interfere with nutrition, increase medical risk, or make recovery skills harder to use consistently. When both concerns can be managed safely within the program, they can be included in one coordinated treatment plan.3, 12
Obsessive-Compulsive and Related Disorders
Someone living with OCD may experience intrusive thoughts, obsessive fears, checking, rituals, reassurance-seeking, avoidance, or an intense need for certainty. These experiences can overlap with eating disorder rules, but similar-looking behaviors do not always serve the same function.
Body dysmorphic disorder is also classified among obsessive-compulsive and related disorders. It involves persistent preoccupation with perceived flaws in appearance that may appear minor or may not be noticeable to other people. The term body dysmorphia is often used informally, while body dysmorphic disorder is the clinical diagnosis. Muscle dysmorphia is a specific presentation in which a person becomes preoccupied with being insufficiently muscular, which may affect food intake, body checking, supplement use, or compulsive exercise.
A person's eating may be shaped by contamination concerns, distress about perceived flaws in appearance, or obsessive behaviors, beliefs, and rituals that are not primarily about food, weight, or body image. Understanding what is driving the behavior helps treatment respond to the person's actual experience rather than assuming every food rule or ritual serves the same function.8, 1
ADHD, Autism, and Neurodevelopmental Differences
Neurodiversity describes the natural range of differences in how people think, process information, communicate, and experience the world. Neurodivergent people, including autistic people, people with ADHD, and people with other neurodevelopmental disorders, may experience differences in interoception, sensory processing, executive functioning, planning, routines, transitions, communication, and the type of treatment structure that feels supportive.
A person with ADHD may lose track of meals or find it difficult to organize food consistently. An autistic person may prefer greater predictability or benefit from support around textures, hunger and fullness cues, and changes in routine. A neurodiversity-affirming approach adapts treatment to the person's sensory, communication, executive-functioning, and body-awareness needs rather than assuming every eating behavior has the same motivation.11, 7
Personality and Attachment-Related Concerns
Someone living with borderline personality disorder or significant attachment-related concerns may experience emotional intensity, fears of abandonment, difficulty trusting others, identity disruption, impulsivity, or self-injury risk. For some people, periods of relational stress may intensify eating disorder urges or disordered eating patterns that have helped them cope.
These experiences can affect both a person's eating disorder and what it feels like to build trust with a treatment team. Treatment may need to give greater attention to relationship safety, emotional regulation, boundaries, and consistency.9
Why Similar Eating Disorder Behaviors Can Mean Different Things
Food restriction, binge eating, purging, laxative misuse, excessive exercise, and other compulsive behaviors may look similar from the outside while serving very different functions for the person experiencing them.
| What others may notice | What may be affecting the person |
|---|---|
| Food avoidance | Fear of weight gain, contamination concerns, trauma associations, sensory discomfort, nausea, or reduced appetite |
| Irregular eating | Intentional restriction, depression, executive-function difficulties, substance use, disrupted routines, or reduced awareness of hunger |
| Binge eating | Nutritional deprivation, emotional overwhelm, impulsivity, trauma triggers, reward-seeking, or other addictive behaviors |
| Compulsive or excessive exercise | Eating disorder compensation, anxiety reduction, obsessive-compulsive patterns, emotional avoidance, or identity concerns |
| Purging or laxative misuse | Fear, shame, physical discomfort, attempts to compensate for eating, emotional relief, or compulsive patterns |
This is why treatment cannot assume that one intervention will mean the same thing for every person. The goal is to understand what the behavior may have been helping the person manage, what risks it creates, and what support could help them develop safer ways of responding.
Common examples include restriction, binge eating, purging, compulsive exercise, rigid food rules, body avoidance, or ARFID-related restriction.
Eating disorder symptoms are often the most visible concern, but they do not always exist in isolation.
- Trauma and PTSD
- Anxiety
- Depression
- OCD
- ADHD and autism
- Substance use
- Insecure attachment
- Safety concerns
These concerns can influence eating patterns, emotional regulation, routines, relationships, body experience, and recovery.
- Emotion regulation
- Body awareness
- Sensory experience
- Executive functioning
- Routines
- Avoidance
- Impulsivity and compulsivity
- Relational stability
- Daily functioning
- Medical status
- Nutritional stability
- Psychiatric status
Similar eating behaviors can have different drivers and overlapping functions. Co-occurring conditions can present different barriers to recovery.
Care is guided by formulation, not by viewing diagnoses in isolation.
The plan combines the services and level of care a person needs at this time.
Treatment and level of care are based on the full clinical picture, not diagnosis alone.
As nutrition, stability, functioning, and trust improve, the clinical picture may become clearer and the plan may need to change. Some co-occurring conditions can be addressed at the same time, while others are better approached by sequencing treatment at the right pace.
Integrated care must remain responsive as needs change over time.
The framework begins with what is most visible, but it does not stop there. It considers how the person's emotions, body experience, relationships, medical and nutritional stability, environment, and other symptoms may be affecting recovery. As a person feels safer, more nourished, and better understood, the clinical picture may change. Reassessment allows the treatment plan to change with current needs rather than remaining fixed to how a person appeared at admission.
How Co-Occurring Needs Enter the Treatment Plan
Not every concern needs to be approached in the same way or at the same time. A person's treatment plan may include several different kinds of clinical decisions.
What Needs Attention Now
Medical instability, acute nutritional risk, severe eating disorder behaviors, withdrawal risk, self-harm, self-injury, suicidal ideation, or another immediate safety concern may require priority attention.
What Can Be Treated Alongside the Eating Disorder
Anxiety, depression, obsessive-compulsive symptoms, substance use disorder recovery, emotional-regulation difficulties, and ADHD- or autism-related support needs may be incorporated into a person's current treatment. Some concerns may be appropriate for simultaneous treatment when they can be addressed together without compromising the person's safety or eating disorder recovery.
What Needs Stabilization or Careful Pacing
Trauma-related symptoms can be acknowledged and stabilized from the beginning. Deeper trauma processing may need to be paced according to the person's nutrition, medical safety, psychiatric stability, coping capacity, and recovery support. Careful sequencing helps ensure that deeper work does not move ahead of the stability and support a person needs to engage safely.
What Needs Outside Coordination or Another Level of Care
A person may need specialty testing, medical hospitalization, inpatient detoxification, residential treatment, or another service when their current needs exceed what the program can safely provide.
This decision-making process is one of the most important parts of integrated treatment. The question is not simply which conditions someone has. It is what they need now, what they can safely work on together, and what may need to happen next.2, 4, 12
What Does Integrated Treatment Look Like at Empowered?
At Empowered Treatment, we believe a person should not have to enter eating disorder treatment and leave the rest of their experience at the door. Integrated treatment means that our interdisciplinary team builds an individualized treatment plan around your eating disorder, medical and nutritional needs, mental health, substance-use concerns, safety, relationships, and goals for recovery.
Empowered provides adult intensive outpatient treatment through a whole-person approach that combines the structure of comprehensive treatment with the flexibility of person-centered care. Your treatment plan may include:
- Medical and nutritional care: Medical evaluation and monitoring, weekly individual sessions with our dietitians, nutrition stabilization and education, individualized meal plans, and supported meals
- Psychiatric care: Psychiatric evaluation, medication management, and ongoing assessment
- Therapy and skill development: Psychoeducation, individual therapy, group therapy, cognitive behavioral therapy, dialectical behavior therapy, and experiential therapies
- Trauma-integrated care: EMDR, Internal Family Systems therapy, and somatic therapies
- Support and coordination: Family support, coordination of specialty testing, coordination with outside providers, continued-care planning, and relapse-prevention planning
Our clinical team works together and with you to determine what needs the most attention now, which concerns can be addressed together, and which areas may need more time, stabilization, or coordination. As your needs change, your treatment plan can change with you.
Taking the next step can feel overwhelming, but it can begin with a supportive conversation. Our team is available to discuss what you are currently experiencing and help determine whether Empowered's IOP program provides the right level of care for you.
Frequently Asked Questions
How common are co-occurring conditions in people with eating disorders?
They are common. A person receiving eating disorder treatment may also be living with anxiety, depression, trauma-related symptoms, OCD, substance use, ADHD, autism-related needs, self-injury, or personality and attachment-related concerns. The exact rates vary by diagnosis and treatment setting.
Can an eating disorder and another mental health condition be treated together?
Often, yes. Integrated treatment allows the person's eating disorder to remain a direct focus while other clinically significant concerns are included in the same treatment plan. Some parts of care may begin together, while others need to be paced according to safety, nutrition, functioning, and readiness.
Can Empowered treat eating disorders and substance use disorders together?
Empowered can address substance use or addiction when the person's needs can be managed safely within the program. Someone who needs inpatient detoxification or residential substance-use treatment will be referred to the appropriate setting.
Can Empowered work with ADHD, autism, or BPD?
Yes, when the person's overall needs are appropriate for the program. Treatment can account for sensory needs, executive-function difficulties, communication differences, emotional intensity, attachment concerns, and relationship patterns. Empowered can coordinate specialty testing when additional clarification would help.
How does Empowered determine the appropriate level of care?
The team uses a standardized level-of-care assessment framework to consider the person's eating disorder symptoms, medical and nutritional stability, psychiatric status, substance use, safety, functioning, treatment history, available support, and need for structure. Diagnosis is one part of that assessment, but it does not determine placement by itself. Learn more about how clinicians determine the appropriate level of care.
What happens if I need a different or more intensive level of care?
The team will discuss what appears clinically appropriate and help coordinate a referral when possible. This may include medical hospitalization, inpatient detoxification, residential treatment, a more intensive eating disorder setting, or another specialty service.
References
- American Psychiatric Association. (2022). Diagnostic and statistical manual of mental disorders (5th ed., text rev.). American Psychiatric Association Publishing. https://doi.org/10.1176/appi.books.9780890425787
- American Psychiatric Association. (2023). The American Psychiatric Association practice guideline for the treatment of patients with eating disorders (4th ed.). American Psychiatric Association Publishing. https://doi.org/10.1176/appi.books.9780890424865
- Bahji, A., Mazhar, M. N., Hudson, C. C., Nadkarni, P., MacNeil, B. A., & Hawken, E. (2019). Prevalence of substance use disorder comorbidity among individuals with eating disorders. Psychiatry Research, 273, 58–66. https://doi.org/10.1016/j.psychres.2019.01.007
- Brewerton, T. D. (2023). The integrated treatment of eating disorders, posttraumatic stress disorder, and psychiatric comorbidity. Frontiers in Psychiatry, 14, Article 1149433. https://doi.org/10.3389/fpsyt.2023.1149433
- Day, S., Hay, P., Basten, C., Byrne, S., Dearden, A., Goldstein, M., Hannigan, A., Heruc, G., Houlihan, C., Roberts, M., Tannous, W. K., Thornton, C., Valentine, N., & Mitchison, D. (2024). Posttraumatic stress disorder (PTSD) and complex PTSD in eating disorder treatment-seekers. Journal of Traumatic Stress, 37(4), 672–684. https://doi.org/10.1002/jts.23047
- Hambleton, A., Pepin, G., Le, A., Maloney, D., National Eating Disorder Research Consortium, Touyz, S., & Maguire, S. (2022). Psychiatric and medical comorbidities of eating disorders. Journal of Eating Disorders, 10, Article 132. https://doi.org/10.1186/s40337-022-00654-2
- Li, Z., Halls, D., Byford, S., & Tchanturia, K. (2022). Autistic characteristics in eating disorders. European Eating Disorders Review, 30(5), 671–690. https://doi.org/10.1002/erv.2875
- Mandelli, L., Draghetti, S., Albert, U., De Ronchi, D., & Atti, A.-R. (2020). Rates of comorbid obsessive-compulsive disorder in eating disorders. Journal of Affective Disorders, 277, 927–939. https://doi.org/10.1016/j.jad.2020.09.003
- Miller, A. E., Trolio, V., Halicki-Asakawa, A., & Racine, S. E. (2022). Eating disorders and the nine symptoms of borderline personality disorder. International Journal of Eating Disorders, 55(8), 993–1011. https://doi.org/10.1002/eat.23731
- Moroshko, I., Raspovic, A., Liu, J., & Brennan, L. (2025). Trauma and eating disorders: An integrated umbrella and scoping review. Clinical Psychology Review, 119, Article 102592. https://doi.org/10.1016/j.cpr.2025.102592
- Nazar, B. P., Bernardes, C., Peachey, G., Sergeant, J., Mattos, P., & Treasure, J. (2016). The risk of eating disorders comorbid with attention-deficit/hyperactivity disorder. International Journal of Eating Disorders, 49(12), 1045–1057. https://doi.org/10.1002/eat.22643
- Substance Abuse and Mental Health Services Administration. (2020). Substance use disorder treatment for people with co-occurring disorders (Treatment Improvement Protocol 42). https://www.ncbi.nlm.nih.gov/books/NBK571020/
You should not have to leave part of your story at the door.
If you are managing an eating disorder alongside other concerns, a conversation is the place to start. Our team can help determine whether Empowered's IOP is the right level of care, or help you find the one that is.