Exploring circannual rhythms and chronotype effect in patients with Obsessive-Compulsive Tic Disorder (OCTD): A pilot study

Nov 18, 2019Journal of affective disorders

Yearly biological rhythms and daily activity patterns in people with Obsessive-Compulsive Tic Disorder

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Abstract

A statistically significant circannual rhythm for obsessive-compulsive symptoms was observed (p = 0.007).

  • Obsessive-compulsive symptoms varied significantly throughout the year, with lower severity reported in summer compared to winter and autumn.
  • No circannual rhythm was detected for tic severity, which remained consistent across seasons.
  • Patients were categorized into three chronotypes: 40.5% morning-types, 40.5% neither-types, and 19.0% evening-types.
  • Evening-type patients exhibited higher obsessive-compulsive symptom severity in summer compared to morning-type patients (15.7 ± 5.2 vs 3.4 ± 6.0).
  • Further research is needed to explore the circannual rhythms of tics and obsessive-compulsive symptoms over multiple years with larger sample sizes.

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Full Text

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