Avoidant/Restrictive Food Intake Disorder (ARFID) is a condition that we at Philadelphia Integrative Psychiatry are intimately familiar with, especially in treating its comorbidities. Many of our patients struggle with ARFID and related comorbidities, navigating a complex landscape of health challenges that extend beyond dietary restrictions. In this blog, we define the various types of ARFID, examine the comorbidities associated with the disorder, and begin to explore effective treatment options.

Identification of ARFID Subtypes

A recent study published in the journal Pediatric Psychiatry titled "Subtypes of avoidant/restrictive food intake disorder in children and adolescents: a latent class analysis" sheds light on the complexity of ARFID by discussing distinct subtypes of the disorder. The study reveals four unique subtypes of ARFID, each with specific characteristics that can influence the approach to treatment:

  • Fear Subtype: This group experiences a significant fear of aversive consequences related to eating, such as choking or vomiting. This is often comorbid with anxiety disorders

  • Lack of Interest Subtype: Individuals in this category show little to no interest in food or eating, which can lead to nutritional deficiencies and inability to maintain weight. 

  • Sensory Subtype: These patients are overly sensitive to the sensory properties of food like texture, taste, and smell, often resulting in a very restricted diet and difficulty maintaining weight. 

  • Combined Subtype: This subtype exhibits traits of multiple other subtypes, making it particularly challenging to address due to its complex nature. This is often comorbid with autism. 

Common Comorbidities 

The study "Co-existing mental and somatic conditions in Swedish children with the avoidant restrictive food intake disorder phenotype" showed that children with ARFID are at a higher risk of various neurodevelopmental, gastrointestinal, and other disorders such as autism, intellectual disability, and gastroesophageal reflux disease compared to controls. Additionally, these children have a notably higher prevalence of mental health conditions, including ADHD and autism, and they require more intensive healthcare utilization, as evidenced by longer hospital stays and a higher number of distinct diagnoses. The study also indicates that children with ARFID are often diagnosed with mental health conditions at a younger age than their peers. These findings underscore the necessity for a multidisciplinary approach in treating ARFID, highlighting the importance of early screening and integrated care strategies to address the complex health profiles of affected children.

Treatment Options

When addressing ARFID itself, treatment with an ARFID trained therapist is essential. Dr. Danish’s previous mentor at CHOP, Katherin Dahslgaard, is a world renowned expert on feeding disorders in children. She is local to the region but also does virtual sessions. Here is her website.

In terms of approaches used in group settings, the article "Development of an inpatient protocol for adolescents with avoidant/restrictive food intake disorder: a case study" discusses a very effective treatment protocol tailored for adolescents with Avoidant/Restrictive Food Intake Disorder (ARFID). This protocol, developed by modifying existing anorexia nervosa (AN) guidelines, aims to address the unique challenges of ARFID, such as the need for greater meal choice flexibility and the elimination of certain restrictive practices like rest periods post-meals. The implementation of this ARFID-specific protocol showed promising results in a case study, leading to less emotional distress, improved eating behaviors, and better weight gain compared to the AN protocol. The protocol was well-received by patients, families, and staff, suggesting a more effective and patient-centered approach to inpatient care for ARFID. 

Implications for Clinical Practice

The insights from this research highlight the critical need for a personalized treatment strategy, acknowledging that each ARFID subtype may require distinct therapeutic interventions. At Philadelphia Integrative Psychiatry, our team of therapists, nurse practitioners, and doctors focuses on managing the numerous comorbidities associated with ARFID, while collaborating with area specialists who are adept at addressing the core aspects of ARFID itself. Together, we ensure a comprehensive and effective approach to treatment, tailored to meet the unique needs of each patient.

If you or a loved one are seeking support for ARFID or similar conditions, please text or call 610-999-6414 to learn how we can help.

Sources: 

https://pubmed.ncbi.nlm.nih.gov/38558975/ 

https://pubmed.ncbi.nlm.nih.gov/38449721/

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