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Clonidine in 50 Children with Intellectual Disability: A Naturalistic Study

Annie Swanepoel¹, Raka Maitra^2,3, Mona Botros⁴

¹SET CAMHS LD team, NELFT, Chelmsford, UK.

Journal of Child and Adolescent Psychopharmacology

|August 8, 2025

Insights

Clonidine effectively treats attention-deficit/hyperactivity disorder (ADHD), sleep issues, tics, and challenging behaviors in children with intellectual disability (ID). This medication is well-tolerated and improves functioning over time.

Area of Science:

Child and Adolescent Psychiatry
Neurodevelopmental Disorders
Pharmacology

Background:

Children with intellectual disability (ID) often experience adverse effects from standard psychiatric medications.
Off-label treatments are frequently necessary for this population.
Clonidine has shown potential benefits for attention-deficit/hyperactivity disorder (ADHD), sleep onset difficulties, challenging behaviors, and tics in children with ID.

Purpose of the Study:

To evaluate the effectiveness and tolerability of Clonidine in children with intellectual disability.
To identify factors predicting treatment response in this population.

Main Methods:

A naturalistic, cross-sectional survey of 50 children with ID treated with Clonidine over 3 years.
Data collected included treatment indications, dosage, and changes in functioning using the Developmental Disabilities Modification of Children's Global Assessment Scale (DD-CGAS).
Functioning was assessed before treatment and 6-12 months later.

Main Results:

Clonidine dose, ID severity, concomitant medications, and comorbid diagnoses predicted improved functioning at 2 months.
These improvements were sustained after 1 year of treatment.
Clonidine was generally well-tolerated.

Conclusions:

Clonidine is a useful treatment for ADHD, sleep difficulties, tics, and challenging behaviors in children with ID.
The medication appears effective and well-tolerated in this population.
Findings can inform clinical practice for pediatricians and psychiatrists treating children with ID.

Read full analysis

Abstract:

Background: Children with intellectual disability (ID) are more susceptible to adverse effects from standard psychiatric medications, often necessitating the use of off-label treatments. In the limited studies to date, Clonidine has displayed evidence of benefit in treating attention-deficit/hyperactivity disorder (ADHD), sleep onset difficulties, behaviors that challenge, and tics. Methods: This naturalistic study involved a cross-sectional survey completed by 4 consultant psychiatrists, detailing 50 children with ID treated with Clonidine over a 3-year period. Data collected included treatment indications, dosage, and retrospective Developmental Disabilities Modification of Children's Global Assessment Scalescores to evaluate functioning before treatment and again 6-12 months later. Results: Among children who remained stable on Clonidine, ordinal regression analyses revealed that total Clonidine dose, level of ID, concomitant medications, and comorbid diagnoses significantly predicted improved functioning at 2 months, which was sustained after 1 year of treatment with Clonidine. Conclusions: Clonidine is useful to treat ADHD, sleep difficulties, tics, and behaviors that challenge. Clonidine was generally well tolerated and appears to be an effective treatment option for children with ID. This will inform the clinical practice of both pediatricians and psychiatrists who support and treat children with ID.

Keywords:

ADHD Clonidine intellectual disability learning disability

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Intellectual Disability

Intellectual Disability

Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...

Attention-Deficit/Hyperactivity Disorder

Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....

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