Self-injurious behavior and autism
Ferguson explains that self-injurious behaviors (SIBs) are present in 40 – 50% of autistic people. They often persist in varying forms and intensities across the lifespan and significantly increase the likelihood of tissue damage or physical injury, hospitalization, and more restrictive residential placements (2:25). Common forms of repetitive behaviors include head-banging, skin-scratching, self-hitting, hair-pulling, lip or cheek-biting, nail-biting, skin-picking, and hitting against hard objects. Research shows that lower speech production, lower cognitive functioning, greater emotion dysregulation, greater sensory sensitivity, sex, and age are all linked to greater severity of SIB (6:30). The presenter notes that measurements and conceptualization of SIB vary across studies (5:25).
Frequency and distribution of unique SIBs
The speaker outlines her recent publication on the frequency and distribution of unique SIBs across a large sample. The study uses 593 survey responses to explore speech level, cognitive function, emotion dysregulation, and sensory sensitivities for each of the eleven most common non-suicidal SIBs (7:20).
Roughly 30-50% of caregivers reported mild to severe concerns for many types of SIB, highlighting the importance of looking at severity for every kind of SIB instead of an overall score. Results show that higher emotion dysregulation, or difficulty managing, responding, or calming strong emotions, was significantly associated with greater severity of nine types of SIB ranging from self-hitting to skin-picking (10:30). Higher sensory hypersensitivity was associated with greater severity of self-scratching (with and without tissue damage), repetitive hair-twirling, and skin-picking and lip-biting (with and without tissue damage). Ferguson asserts these findings indicate that these types of SIB may be a means of self-soothing or communicating distress in response to overwhelming sensory stimuli (13:30).
Self-scratching, self-hitting, and lip-biting (with tissue damage) were significantly associated with lower IQ, suggesting that the presence of intellectual disabilities (ID) might increase the risk of engaging in specific types of SIB. The study also found that youth who speak in full sentences demonstrate lower severity of self-hitting and head-banging than youth who use no words to communicate. Ferguson reiterates that self-hitting and head-banging may be a way of communicating, especially for autistic people with ID who are non-verbal (15:45).
She summarizes research findings, reiterating the important insights we can gain by examining the severity of unique types of SIB rather than their overall occurrence. She notes that head-banging and self-hitting can result in serious physical harm, posing a greater risk to those with lower IQs and speech ability (17:25).
The speaker suggests asking these questions to help determine causes and care strategies for SIB (19:45):
Adult Self-Reports
The presenter outlines a recent study by Moseley and colleagues that asked autistic adults about the perceived role of non-suicidal SIBs (a more extensive list than the previous study). Participants reported hurting themselves in order to feel something, change emotional pain into something physical, relieve stress or pressure, deal with frustration, shock or hurt someone, self-punishment, and to prevent hurting themselves in other ways (22:20).
Dialectical behavior therapy (DBT)
Dialectical Behavior Therapy (DBT) was developed for people with borderline personality disorder but can be applied to people across the spectrum of life. DBT is often a first-line treatment for people who engage in SIB or have suicidal thoughts or tendencies. It works to identify and distinguish repetitive behaviors, accepting the ones that serve a good purpose while changing others that increase the risk of harm to self or others (24:21).
Emotion regulation and challenging behaviors
The speaker outlines the pathway from difficulties with ER to challenging behavior presentation and considers the role that self-regulation has in SIB interventions (27:00):
Individual factors (hungry or tired) → precipitating cues (loud/surprising noise) → difficulty identifying and labeling emotions (overwhelmed) → negative experience continues or increases (no coping strategy) → challenging behavior is expressed.
Emotion recognition
Emotion recognition can be difficult for everyone, and creating a personalized feeling chart can significantly help. Ferguson discusses how to make a feeling chart that captures the sounds and feelings of one’s emotions as well as what someone needs in those moments (30:45).
Emotion regulation (ER) strategies
ER strategies include coping skills and co-regulation techniques, which the speaker suggests should be practiced daily. For caretakers, it is essential to do these things with their child or patient to model effective coping strategies. Ferguson highlights the benefits of parent skills training and provides a free training video that teaches some quick coping skills for calming down and returning to a place where you can work through problems and big emotions more effectively (31:40).
Prevention
SIB prevention techniques focus on reducing the likelihood of distressing situations or contexts. If an SIB consistently occurs in a specific location, consider what about that place may cause distress to you or your child. It’s also helpful to note setting events, like sleep, that can affect irritability and ER throughout the day (33:55). The Research Units in Behavioral Intervention (RUBI) provides free online materials to help with SIB prevention.
Functional behavior analyses of problem behaviors are commonly used to identify antecedents, behaviors, and consequences and can help identify positive and negative communication cycles. Ferguson emphasizes that behavioral approaches must be strengths-based and aimed at reducing negative impact. Other prevention methods include mental health therapies and parent training in behavior management, as outlined in the RUBI resources and Parent-Child Interaction Therapy (ages 2 – 7) (35:55). The speaker shares a clinical guide for treating severe behaviors, toolkits, and ECHO training (39:30) before the Q&A (42:40).
