The importance of distinguishing tics from stereotypies is in the treatment options, differential diagnosis, and prognosis. Some families (and certainly the kids themselves) do not even notice that they are moving abnormally even though 25% have at least one family member with a similar behavior. But many parents are upset about the potential for teasing and stigmatization. When you ask them directly what they are afraid of, they often admit fearing an underlying diagnosis such as intellectual disability, autism, or Tourette syndrome. The first two are straightforward to rule in or out, but Tourette can be subtle. If parents don’t bring up the possibilities, it is worth telling them directly which underlying conditions can be ruled out.
There are many conditions comorbid with tics including attention-deficit/hyperactivity disorder (ADHD), obsessive compulsive disorder (OCD), learning disorder (LD), behavioral, developmental or social problems, and mood or anxiety disorders. This clearly means that a comprehensive evaluation looking specifically for these conditions is needed when a child has chronic tics. Typically developing children with complex arm or hand movements also are more likely to have ADHD (30%), LD (20%), obsessive-compulsive behaviors (10%), or tics (18%).
Tics and stereotypies may be annoying, but generally are not harmful or progressive, although repeated movements such as skin or nose picking may result in scars or infections, and severe head banging can lead to eye injuries. Frequently repeated motor acts can cause significant muscle pain and fatigue. The most common problems are probably injury to self-esteem or oppositional behavior as a result of repeated (and fruitless) nagging or punishment by parents, even if well-meaning.
Since they occur so often along with comorbid conditions, our job includes determining the most problematic aspect before advising on a treatment. Both tics and stereotypies may be reduced by distraction, but the effect on stereotypies is faster and more certain. You can make this intervention in the office by simply asking how the child can tell when they make the movement and have them plan out what they could do instead. An example might be to shift a hand flapping movement (that makes peers think of autism) into more acceptable fist clenching. Habit reversal training or differential reinforcement based on a functional analysis can be taught by psychologists when this simple suggestion is not effective. When tics are severe, teacher education and school accommodations (504 Plan with extended time, scribe, private location for tic breaks) may be needed.
Medication is not indicated for most tics because most are mild. If ADHD is present, tics may actually be reduced by stimulants or atomoxetine rather than worsened. If the tic is severe and habit reversal training has not been successful, alpha agonists such as clonidine or guanfacine, or typical or atypical neuroleptics may be helpful. Even baclofen, benzodiazepines, anticonvulsants, nicotine, and Botox have been used. These require consultation with a specialist.
As for other chronic medical conditions, tics and persisting stereotypies deserve a comprehensive approach, including repeated education of the parent and child, evaluation for comorbidity, school accommodations, building other strengths and social support, and only rarely pulling out your prescription pad.
Dr. Howard is an assistant professor of pediatrics at The Johns Hopkins University, Baltimore, and creator of CHADIS (www.CHADIS.com). She has no other relevant disclosures. Dr. Howard’s contribution to this publication was as a paid expert to Frontline. E-mail her at pdnews@frontlinemedcom.com.