Content

Home Blog

The Correlation Between ADHD, Stimming, and Tics Explained

Wafaa Amjad Dar
Written by:
Wafaa Amjad Dar
Pharm-D
Dr. Michael Chichak
Medical Reviewer:
Dr. Michael Chichak
MD

Highlights

  • ADHD, stimming, and tics can be connected; however, these are distinct conditions.
  • Stimming is not necessarily a symptom of a mental health condition even though it can be associated with ADHD. Neurotypical people can also stim sometimes.
  • People with ADHD are prone to have comorbid conditions that cause tics.
  • Stimming and tics may affect daily life and require professional help if this impact is significant.

Attention deficit hyperactivity disorder (ADHD), stimming, and tics are distinct conditions but they often co-exist. People with ADHD may display self-soothing behaviors such as certain sounds or movements. Also, there is a known probability of ADHD being comorbid with Tourette syndrome which causes tics.

Some people may confuse specific kinds of fidgeting — one of the official diagnostic criteria for ADHD — with stimming or tics, although they are different from each other in nature. So, let’s learn more about how they may overlap and interconnect to dispel the misconceptions and better understand the features of these conditions.

See a licensed medical provider online within 24 hours to go through a detailed mental health assessment.

Stimming: What Is It, and Why Do People Do It?

Stimming is a form of repetitive behavior that helps a person divert their attention when they are bored, anxious, or frustrated. Excessive positive feelings like extreme happiness can lead to stimming as well. It can serve as a self-calming or self-stimulating process but in both cases, it helps to process unpleasant feelings or concentrate.

Types of Stimming Behaviors

Stimming ranges from subtle to highly noticeable; from twisting hair to nail-biting and hair-pulling. These behaviors fall into the following categories [1*] :

  • Auditory Stims: They are related to making sounds or having repetitive responses to sounds.
    • Humming, grunting, whistling, or shrieking
    • Covering and uncovering ears
    • Finger-snapping, tapping on objects, or tapping on ears
    • Repetitive speech (song lyrics, movie lines, and book sentences)
  • Visual Stims: Involve visual stimulation when there is the need to self-soothe or deal with visual sensory overload.
    • Staring at objects for a long time (ceiling fans, lights, etc.)
    • Peering at things from the corners of the eyes (eye-tracking)
    • Lining things up (object placement)
    • Repetitive blinking
    • Turning lights on and off
  • Olfactory Stims: Stimming activities that involve taste and smell.
    • Placing objects in the mouth to taste them
    • Sniffing random objects
    • Licking
  • Vestibular Stims: Behaviors that involve moving the whole body.
    • Pacing
    • Jumping
    • Rocking back and forth
    • Spinning
  • Tactile Stims: Involve the sense of touch.
    • Rubbing or scratching the skin with hands or objects
    • Hand flapping (when happy, anxious, excited, etc.)
    • Tapping the hands and/or feet on hard surfaces
    • Repetitive clenching and unclenching of hands

These can be also classified into typical and atypical stims. Typical ones are non-disruptive behaviors that everyone experiences at some point in time; for example, foot tapping, cracking knuckles, and playing with hair. Atypical stims, on the other hand, are disruptive and happen because of an underlying disorder. For example, walking on tiptoes, jumping repeatedly, and chewing non-edible items like clothes or hair.

What is common for all these behaviors is the fact that they are purely sensation-seeking. When stims turn dangerous and can cause physical damage, then they are termed self-injurious behavior (SIB).

Why Does Stimming Happen?

Stimming is a subconscious coping mechanism people may develop to deal with very strong emotions, boredom, frustration, or sensory overload [2*] . It can be associated with relaxation or concentration and seems a form of self-regulation.

Sometimes, when stimming repeatedly helps a person reduce pain, anxiety, or communication issues, it can get habitual. Even neurotypical people sometimes stim, however, they are more likely to stop it over time or switch to more meaningful activities.

Fidgeting vs. Stimming — Are They the Same Thing?

Fidgeting and stimming [3*] are often mixed up; however, while they might share some similarities, they are not the same.

 

Fidgeting

Stimming

Form

Simple repetitive movements

Complex movements

Nature

Subconscious

Deliberate, intentional

Purpose

Maintaining focus during periods of inattention, boredom, or stress

Soothing oneself through sensory regulation during sensory overload

Effects on daily life

Minimum

Significant

Associated conditions

Most commonly associated with ADHD

More commonly associated with autism spectrum disorder (ASD) but also present in ADHD

The Link Between Stimming and ADHD

The direct answer to the question “Is stimming a sign of ADHD?” is negative because stimming is not included in its official diagnostic criteria, such as the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders). However, stimming can be observed in people with ADHD — the reason lies in the neurobiological aspect of this disorder. 

People with ADHD have variable levels of dopamine and norepinephrine; stimming provides a needed sense of stability and sensory feedback to offset this neurobiological imbalance. This is like the constant urge to move that causes trouble staying still or sitting quietly, that is why those with the hyperactive form of ADHD are most prone to fidgeting and stimming.

However, inattention may also happen as an attempt to overcome mental fog associated with inattentive ADHD. If a person needs some kind of stimulation to process information faster or more efficiently, concentrate, and inhibit impulses, they may stim, and such behaviors might transform into habits. Finally, for a few, stimming could be a way of disposing of unused energy or remaining alert mentally when they feel bored or engaged elsewhere. 

Why Stimming Can Be Misdiagnosed as ADHD?

Stimming in people with ADHD is only one sign, which may also indicate another condition. During the diagnostic process, a healthcare provider assesses the primary presentation of inattention, impulsivity, and hyperactivity, reviewing the health status and ADHD signs comprehensively. Some stimming behaviors can manifest similarly to some ADHD symptoms, which may be the reason for misdiagnosis, so it’s important to see a qualified clinician to get properly assessed and receive a correct diagnosis. Before your appointment, you can take our free online ADHD test to have a more informed discussion.

Understanding Tics

Tics [4*] can be categorized as simple and complex. Simple tics are said to entail slight movements whilst complex tics involve most of the body parts. In addition, tics fall under several categories: 

  • Simple Motor Tics: They usually involve the movement of a single muscle or a limited number of muscles. They may go unnoticed as they are quick.
    • Lip biting
    • Eye blinking
    • Wrinkling the nose
    • Head twitching
  • Complex Motor Tics: These involve more than one muscle group. They usually appear very intentional, even though they’re just as involuntary as simple tics.
    • Facial grimacing
    • Jumping
    • Skipping
    • Kicking 
    • Sniffing objects
    • Mimicking others’ body movements
  • Simple Vocal Tics: They often involve basic sounds.
    • Grunting
    • Hissing
    • Throat clearing
    • Barking
    • Coughing
  • Complex Vocal Tics: These may seem quite intentional even though they are usually beyond the person’s control.
    • Making animal sounds
    • Yelling
    • Calling out
    • Repeating words and phrases

Types of Tic Disorders

Tics may be normal if they are occasional or only during moments of stress. However, should they persist over time and worsen, they may turn out to be symptoms of a disorder. According to the Diagnostic and Statistical Manual of Mental Disorders, there are three major forms of tic disorders:

  • Provisional Tic Disorders: These are the most common type of tic disorder that begins before the age of 18 years and lasts less than a year. There might be either simple or motor tics.
  • Persistent (Chronic) Tic Disorders: These are more severe, often with co-occurring sets of both motor and vocal tics, but typically not both simultaneously. This disorder is present for at least more than a year before the age of 18. They do not spontaneously remit, but the severity may vary over time.
  • Tourette Syndrome: It is a complex tic disorder in which more than one motor and at least one vocal tic persist for longer than one year, thereby causing interference with normal social interaction or daily activities. The severity and frequency of tics can have periods of exacerbation and remission.

What Causes Tic Disorders

The causes of tics range from biological to environmental factors. Research shows evidence of genetic contribution [5*] and even the connection with lower quality of family functioning [6*] as another risk factor. Stress during pregnancy, exposure to toxins, maternal smoking, low birth weight, and complications both in pregnancy and delivery can also be a factor.

Some environmental causes of tic disorder are chronic stress, traumatic experience, anxiety, and exposure to certain medications. Also, tension from the dislocation of a joint in the upper cervical vertebrae can affect the sensory stimulation by the spinal cord and brainstem, which may cause tics.

Stimming vs Tics: How to Differentiate?

Although stims and tics share some characteristics, they can also be distinguished in many ways. As a contrast in their nature, imagine someone sitting in an office who is waiting to be interviewed for a job. Due to nervousness and anxiety, they may begin stimming, perhaps by tapping their feet, but they can stop, calm down, and regain control over the movements to be still. With tics, this is nearly impossible despite efforts.

How Stimming and Tics May Co-Exist?

Sometimes, tics and stimming may occur together, so voluntary and involuntary behaviors mix. An overlap because of similarities can complicate the diagnostic process and treatment, hence demanding nuanced understanding. If both stimming and tics occur together, it’s important to identify the underlying disorder and create the right plan for managing it.

Can Stimming That Is Caused by ADHD Lead to Tics?

There is no direct evidence that stimming associated with ADHD will lead to tics. However, combined with the already predisposed neurological state of people with ADHD, it might contribute to an increased risk for the activation of tics. Also, there is a significant degree of comorbidity between ADHD and tics: 50% to 90% [7*] of children diagnosed with Tourette syndrome may also have an accompanying ADHD; that’s why ADHD can be associated with both behaviors, tics and stims.

If you suspect you have ADHD, consulting an online specialist for ADHD can provide clarity through a thorough evaluation and help you take the next steps toward effective management.

Impact on Daily Life and Social Interactions

The occurrence of stimming and tics may disrupt daily life or social interactions. Tics, especially vocal ones, can hinder effective communication resulting in frustration and misunderstandings. They can be distracting and affect one’s ability to focus at work, school, or during other activities.

In addition to potentially distracting behaviors themselves, people with tics or stimming may have a higher level of stress and anxiety caused by these symptoms. Consequently, a person may experience vulnerability in being exposed to social situations, possible issues with self-esteem, and emotional anguish.

Take control of your symptoms

Don’t let ADHD affect your life. Get a diagnosis and personalized treatment online within 24 hours.

Managing Stims

If stimming is prolonged or interferes with your life or attracts negative attention, it may be the right time to seek professional help. However, in addition to diagnosis and treatment, there are also self-help techniques that may be beneficial:

  • Start managing your stims by learning what triggers them. For this purpose, you log the situations and factors that potentially cause stims to analyze this information later.
  • Use a fidget spinner, stress ball, or other textured objects to fill the need for sensory input when you can’t get as much without drawing attention in some social situation.
  • Reward yourself when you remember to use an alternative coping mechanism instead of stimming.
  • Use non-aromatic products that would not cause sensory overload; instead, there must be a neutral smell around.
  • Take warm baths with Epsom salts: they can relax the muscles and decrease inflammation and tension.
  • Recline into talking to family or friends about your experience to make sure they understand why you act this way and seek advice.

Treatment Options for Tics and Stimming in ADHD

It is important to consult with a medical professional about an overall treatment strategy for you based on the underlying cause and severity of your symptoms. The most common treatment options for the management of tics and stimming as part of ADHD include the following:

  • Psychotherapy: Occupational and behavioral therapy have been proven to be effective in helping to develop healthy self-regulating behaviors. CBT helps individuals develop coping strategies and skills to manage their anxiety. Habit reversal training [8*] helps one to replace stims with other behaviors. Sensory integration therapy can help regulate sensory input load so the body may feel a reduced need for stimming. 
  • Medication:ADHD medications such as stimulants and non-stimulants may help with suppressing stimming as they regulate attention, hyperactivity, and impulse control.
  • Other Techniques: Deep breathing exercises, mindfulness practices, meditation, yoga, muscle relaxation techniques, and other stress-management strategies can reduce stimming by providing alternative ways to self-soothe.

Conclusion

As per knowledge of science, stimming, tics, and ADHD are interlinked; however, one of them can not define the development of the other. Stimming is not a symptom specific to ADHD, but in some cases, people with ADHD may relate to engaging themselves in it. Tics, on the other hand, may indicate the presence of another condition, comorbid with ADHD. If you want to go through a detailed assessment, book an online appointment with a licensed medical provider at MEDvidi.

Sources

hide
8 sources
  1. Marzvanyan A, Alhawaj AF. Physiology, Sensory Receptors. [Updated 2023 Aug 14]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-.
    Source link
  2. Understanding Stimming: Repetitive Behaviors with a Purpose. Published December 7, 2020.
    Source link
  3. CHADD. Stimming and Fidgeting to Calm and Focus - CHADD. CHADD. Published March 17, 2023. Accessed January 30, 2025.
    Source link
  4. Ueda K, Black KJ. A Comprehensive Review of Tic Disorders in Children. J Clin Med. 2021 Jun 3;10(11):2479. doi: 10.3390/jcm10112479. PMID: 34204991; PMCID: PMC8199885.
    Source link
  5. Dietrich A, Fernandez TV, King RA, et al. The Tourette International Collaborative Genetics (TIC Genetics) study, finding the genes causing Tourette syndrome: objectives and methods. European Child & Adolescent Psychiatry. 2014;24(2):141-151.
    Source link
  6. Vermilion J, Augustine E, Adams HR, et al. Tic Disorders are Associated With Lower Child and Parent Quality of Life and Worse Family Functioning. Pediatric Neurology. 2020;105:48-54.
    Source link
  7. Ludolph AG, Roessner V, Münchau A, Müller-Vahl K. Tourette syndrome and other tic disorders in childhood, adolescence and adulthood. Dtsch Arztebl Int. 2012 Nov;109(48):821-288. doi: 10.3238/arztebl.2012.0821. Epub 2012 Nov 30. PMID: 23248712; PMCID: PMC3523260.
    Source link
  8. Dunbar AB, Magid M, Reichenberg JS. Habit reversal training for body-focused repetitive behaviors: a practical guide for the dermatologist. G Ital Dermatol Venereol. 2018 Aug;153(4):557-566. doi: 10.23736/S0392-0488.18.05949-7. Epub 2018 Apr 18. PMID: 29667792.
    Source link
Show more
Wafaa Amjad Dar
Written by:
Wafaa Amjad Dar
Pharm-D
Dr. Michael Chichak
Medical Reviewer:
Dr. Michael Chichak
MD
Share

Content

Recommended Articles

Join our newsletter

Sign up to receive mental health news and tips delivered right in your inbox every month.

Take the first step today:

book an appointment to get your symptoms assessed and obtain a prescription online.

Evidence Based

This article is based on scientific evidence, written by experts and fact checked by experts.

Our team of experts strive to be objective, unbiased, honest and to present both sides of the argument.

This article contains scientific references. The numbers
in the parentheses (1, 2, 3) are clickable links to peer-reviewed scientific papers.