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Complications of antipsychotic therapy in children with tourette syndrome
Tamara Pringsheim1, Michelle Pearce
1Department of Clinical Neurosciences and Pediatrics, University of Calgary, Calgary, Alberta, Canada. tmprings@ucalgary.ca
Insights
Antipsychotics effectively manage Tourette syndrome tics but frequently cause metabolic side effects like lipid abnormalities and abnormal BMI in children. Neurologic complications were rare, suggesting atypical antipsychotics may be safer.
Area of Science:
- Pediatric Neurology
- Metabolic Disorders
- Pharmacology
Background:
- Antipsychotics are crucial for managing Tourette syndrome tics.
- These medications can lead to significant metabolic and neurologic side effects in children.
Purpose of the Study:
- To systematically monitor metabolic and neurologic side effects in children with Tourette syndrome treated with antipsychotics.
- To assess the incidence and nature of these adverse events over time.
Main Methods:
- A single-center study followed 73 children with Tourette syndrome requiring antipsychotic treatment.
- Monitoring occurred every six months for metabolic (lipids, BMI) and neurologic complications.
- The primary treatment involved atypical antipsychotics.
Main Results:
- 45% of children developed lipid abnormalities, with significantly higher levels in boys and lower HDL in girls compared to population norms.
- 49% had abnormal BMI percentiles, and abnormal BMI was strongly associated with lipid abnormalities (OR 6.0).
- Neurologic complications occurred in only 3 children.
Conclusions:
- Metabolic complications, particularly lipid abnormalities and abnormal BMI, are common in children with Tourette syndrome treated with antipsychotics.
- Routine monitoring of growth and lipid profiles is essential.
- Atypical antipsychotics appear to be associated with a low incidence of neurologic complications.
Abstract:
Antipsychotics are effective at suppressing tics in Tourette syndrome, but can cause side effects. At a single center, all children with Tourette syndrome requiring antipsychotics were systematically monitored for metabolic and neurologic side effects every 6 months. Seventy-three children were followed for a mean of 39.6 months. Most children were treated primarily with an atypical antipsychotic. Thirty-three of 73 children (45%) developed lipid abnormalities. Compared with population-based mean lipid values for boys, total cholesterol, low-density lipoprotein, high-density lipoprotein, and triglyceride levels were significantly higher in our male sample (P < 0.0001). Girls had significantly lower high-density lipoprotein concentrations (P = 0.0033). Thirty-six of 73 (49%) children demonstrated abnormal body mass index percentiles. The odds of having lipid abnormalities were significantly higher in children with abnormal body mass indices (odds ratio, 6.0; 95% confidence interval, 2.15-16.7; P = 0.0004). Three of 73 children developed neurologic complications. Metabolic complications of antipsychotics are common in children. These findings underscore the need to discuss benefits and risks before initiating therapy, and the importance of routinely monitoring growth and lipid profiles. Neurologic complications are uncommon, which is likely attributable to the primary use of atypical antipsychotics in this setting.
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