A study published in The Cureus Journal of Medical Science analyzed a case study of an adolescent with Rapid Eye Movement (REM) sleep behaviour disorder in Moebius syndrome.
Moebius syndrome is a rare neurological condition that primarily affects the muscles that control facial expression and eye movement. It is typically caused by the absence or underdevelopment of the 6th and 7th cranial nerves, which control eye movement and facial expression. Symptoms of the condition may include craniofacial abnormalities, limb malformations, and neuromotor developmental delay. Sleep disorders are also frequently reported in these patients, often related to sleep-disordered breathing.
Rapid eye movement (REM) sleep behavior disorder (RBD) is uncommon in pediatric patients overall and is characterized by dream-enactment behaviors during REM sleep, including vocalizations and complex or violent motor activity, resulting from the loss of the physiological muscle atonia that normally characterizes this sleep stage. These episodes may lead to self-injurious conduct or aggression toward others.
A 13-year-old male adolescent was diagnosed with Moebius syndrome in the neonatal period. In this patient, there was a history of global developmental delay and intellectual disability, along with physical features such as micrognathia and enlarged tonsils.
Caregivers reported restless sleep, vocalizations, and nighttime agitation. A sleep study confirmed RBD, showing abnormal motor activity during REM sleep and reduced muscle atonia. The patient also had signs of upper airway resistance syndrome, contributing to snoring and disrupted sleep.
The patient’s sleep-disordered breathing was addressed with medications and surgery (tonsillectomy), but symptoms recurred. Additionally, RBD treatment with clonazepam and sleep hygiene measures showed little improvement, with worsening nighttime agitation and self-injury.
Overall, this case highlights:
- Sleep disorders, including RBD and breathing-related issues, are important but underrecognized in Moebius syndrome.
- Management can be complex and often requires a multidisciplinary approach.
- More research is needed, especially on effective treatments for pediatric RBD, to improve patient outcomes and quality of life.
For more information, visit cureus.com
To learn more about rare neurological disorders, visit https://checkrare.com/diseases/neurology-nervous-system-diseases/
