What Is Stimming? ADHD And Possible Behavioral Issues

By Nadia Khan

Updated November 20, 2019

Reviewer Lauren Guilbeault

If you've heard of the term "stimming," it was likely in conjunction with Autism Spectrum Disorder (ASD) and some of the disorder's earliest and most easily definable symptoms. Although it has garnered attention primarily as a symptom of ASD, stimming is very common human behavior, and can be observed in people of all ages, backgrounds, and abilities, including those without any discernible disabilities or delays.

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What Is Stimming?

The term "stimming" is an abbreviation for "self-stimulatory behavior." While it may sound complicated, it is an umbrella term used to describe any movements, patterns of behavior, or actions that are used to stimulate the senses. The most commonly seen forms of stimming, both in neurotypical people and in people with delays, include humming, swaying side to side, biting nails, biting the inside of the cheek, tapping fingers or toes, and rubbing the skin. Using these as a guide, you've undoubtedly seen someone in your life stimming, or have found yourself stimming in a moment of boredom or discomfort.

Stimming In Developmental Delays

While stimming is a natural response that is in no way unique to individuals with intellectual or developmental disabilities, it can function as a source of comfort and control for children with developmental delays or developmental disorders. Because most children with developmental delays also experience some amount of sensory overload, stimming can be used as a way to regain control over a certain sensation or experience. Children who are overwhelmed by auditory input, for instance, might be found shrieking or shouting in response to a lot of auditory stimuli. Children who are overwhelmed by visual input may press against their eyelids to create stars in their eyes or move their eyes back and forth rapidly.

In the developmentally disabled, stimming is often more pronounced and exaggerated than the general population and is more likely to be loud, distracting, or different from the standard sources of self-stimulation. This is likely the reason why people typically associate stimming with delays and disabilities. Understanding the function of stimming in these individuals can provide insight into the experiences of individuals with sensory overload as well as into your own behavior and habits.

Stimming in ADHD

While ADHD is not necessarily accompanied by developmental delays or intellectual impairments, it is common to see children who have ADHD present with sensory difficulties. For that reason, ADHD stimming may be more akin to the type of stimming you see in children with Autism Spectrum Disorder (ASD) or other developmental delays than it is to the behavior of typical peers. Children with ADHD may stim more in the form of fidgeting. This can entail a child squirming in their seat, but can also include more noticeable and disruptive behaviors, including speaking over other people, humming loudly, picking at skin or hair, or pacing back and forth. All these behaviors are used to solicit some form of sensory input and may help people with ADHD quiet down some of the sensory systems that are prohibiting focus or creating unpleasant sensations in the body.

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The Functions of Stimming

Stimming has multiple functions, depending on the person indulging in the behavior, and the environment the person is in. Self-stimulatory behavior, by nature, is designed to create a sensation in the body. The reasons for seeking sensation are unique to each individual, however, and can change from day-to-day. For some, stimming is used as a means of exerting control over a situation and redirecting fear or unpleasant energy. When this is the reason for stimulatory behavior, sensory overload is usually involved. Stimming is a form of control that will often appear in a more dramatic movement, sound, or behavior, such as rocking, jumping, or crying. All of these can help quiet an overloaded sensory system by taking the reigns and acting as the source of the feeling.

Some people stim to relieve excess energy. Pacing, biting nails, tapping feet, and fidgeting can all be used as a means of eating up energy that has no other place to go and is commonly seen in children with ADHD. Hyperactivity is a core symptom of ADHD, so eliminating excess energy is not an anomaly within the diagnosis but is almost a matter of course.

Still, for others, stimming is engaged as a way to alleviate boredom. This is perhaps the most common reason for stimming in people who do not have a disorder or delay. Stimming for these individuals usually manifests in smaller, more socially-acceptable ways, such as twirling one's hair while reading a textbook, or tapping one's foot while waiting in line. These small energy expenditures engage the body in several ways and do not require a lot of effort or thought to create.

When Stimming Needs Intervention

Technically, stimming does not require intervention at all. If stimming does not interfere in daily life, it need not be tamped out, eliminated, or lessened. But when stimming begins to interfere with living a healthy, well-adjusted life, therapists, parents, and educators must intervene. This is very often the case in children with Autism Spectrum Disorder and is sometimes the case with children who have ADHD.

Staring off into space at the expense of listening to a lecture or lesson in class is an instance in which stimming significantly interferes with a child's ability to function. Staring into space and failing to acknowledge or listen to an educator will impede a child's academic achievement. Similarly, stimming by humming or speaking over others will likely require intervention, as both of these behaviors can negatively impact a child's social behaviors and social skills.

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Stimming in the Classroom

Stimming within the classroom will look different for each child, even if multiple children are affected by the same disorder. ADHD has three core symptoms, but these symptoms are expressed differently from child to child. Some children with ADHD do not have significant sensory issues and might not stim much, apart from the occasional bout of stirring and wriggling in their seats. Children with both ADHD and sensory issues are far more likely to have larger stimming behaviors, including talking over the teacher, humming, rocking, tapping hands or feet, getting out of seats to run or jump, and twirling in circles. For these children, an IEP or 504 plan is likely necessary to improve learning and encourage success in academics.

Stimming at Home

Stimming at home is unlikely to need the same level of assistance as stimming in school, but may still require some form of intervention, such as therapy. Some children with ADHD may have trouble sitting at the table for meals, and as a result, may develop unhealthy relationships with food and eating. Some may experience sensory issues and difficulty concentrating, which can make completing chores and abiding by parents' requests extremely problematic, leading to relationship rifts between parents and children. Still, others may experience stimming in the form of self-injury, which is problematic and necessitates intervention.

Stimming with ADHD

Although ADHD might seem primarily like an intellectual issue, its effects are far-reaching and impact far more than just classroom settings. Children with ADHD very often experience sensory issues as well, which can exacerbate existing behavioral struggles and can alienate family members and peers. While stimming may initially seem to be problematic for children with ADHD, it can actually be useful for parents, educators, and therapists. The severity and prevalence of stimulatory behavior can help caregivers determine the extent of a child's sensory issues and can help identify the regions of the body and brain the sensory issues are most prominent.

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For some, the thought of discouraging a child to stim is akin to forcing a child to give up a beloved toy or activity; it seems almost cruel. For others, visible stimming functions as a source of alienation and indicates an area of need, so it has to be addressed and resolved. Whether your child with ADHD is experiencing sensory overload, or they are struggling entirely with the symptoms of ADHD, stimming is likely to come into play at some point in their treatment journey. Determining whether or not stimming is a harmful or damaging aspect of ADHD will largely depend on you and your child's goals, and the extent to which you are willing to go to seek treatment for undesirable behaviors.

Seeking Help

If stimming is an issue for you and it's starting to interfere with your life, consider speaking to a therapist. BetterHelp is a great resource for any questions you may have about ADHD and stimming. Professional mental health therapists are also available to you from the comfort and privacy of your own home (or wherever you have an internet connection). A therapist will be able to help you better manage your stimming and arm you with the tools you need to focus on matters of importance. Below are some reviews of BetterHelp counselors, from people experiencing similar issues.

Counselor Reviews

Vivian has been so warm and understanding through this process. I am new to therapy, but she made me feel so comfortable and never made me feel silly for anything I brought up. Having her to go to when I needed a listening ear has been more helpful than I could have ever predicted. She has taught me some new techniques that have brought me a lot of relief in my everyday life, and I am so thankful for her!"

"Jeni has such simple and direct ways of getting to the heart of the matter and such great suggestions for changing behaviors through acknowledging and understanding feelings. I found it especially helpful to write to her, and her written responses have been timely and to the point. I so appreciate being able to work with her."

Conclusion

Ultimately, as discussed above, stimming itself is not a bad thing and should never be regarded as such. Instead, stimming should be recognized for what it is: an outward display of an inward process that can provide clues as to what someone is feeling, thinking, and experiencing, even if they are not capable of putting those experiences into words. Interventions for stimming can vary from actual therapeutic interventions to simple at-home or in-school changes to a child's routine, usually depending on the amount of distraction and problematic behaviors the stim creates. Remember that everyone does this. If it's a concern or interfering with your daily life, there are tools to help you. Take the first step today.


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