Stereotyped movement disorder associated with language delay -

data from case report that contribute to differential diagnosis

Abstract

Introduction: The repetitive movements associated with language disorders represent two important warning signs for ASD (Autism Spectrum Disorders). Even if, according to current research, the delay in language acquisition may not be part of the set of characteristics commonly observed in toddlers with Stereotyped Movement Disorder (SMD), this co-occurrence of language impairment and Stereotyped Movement Disorder may be more common than can be imagined, which leads to mistaken ASD diagnoses. Objective: To characterize the deviant language acquisition process associated with SMD, seeking to differentiate the specific characteristics of ASD. Method: This research presents a case report of two toddlers, aged 30 to 36 months, with an important delay in the acquisition and development of speech associated with the presence of stereotyped movements, with profiles considered at risk for autism. Results: The first assessment showed important results indicating ASD for both children. After a 6-month intervention, there was a decrease in the number of risk signs, such as remission of some behavior characteristic of ASD, improvement in the intensity of repetitive movements and increase of the speech repertoire. Conclusion: Although the presence of repetitive or stereotyped movements is one of the classic signs of ASD, even if it co-occurs with other disorders equally suggestive to this diagnosis, such as delayed speech, for a conclusive diagnosis it is necessary the observation of other symptoms that manifest themselves persistently throughout development.