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Abnormal Sleep in Chronic Inflammatory Demyelinating Polyneuropathy.

Oliver L Steiner1,2,3, Claudia Angela1,2, Fabian Klostermann1,2

  • 1Department of Neurology, Motor and Cognition Group, Charité-Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.

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Individuals with Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) experience poorer sleep quality and increased nocturnal arousals. These sleep disturbances are a significant, often overlooked, non-sensorimotor symptom of CIDP.

Keywords:
CNS manifestationschronic inflammatory demyelinating polyneuropathyfatigueneurodegenerationsleep

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Immunology

Background:

  • Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) is a neurological disorder causing sensorimotor deficits.
  • Non-sensorimotor symptoms (NSMS) are increasingly recognized in CIDP patients.
  • Sleep disturbances are a potential NSMS in CIDP.

Purpose of the Study:

  • To compare sleep behavior in CIDP patients versus controls.
  • To investigate the relationship between sleep disturbances and other NSMS in CIDP.
  • To highlight sleep disturbance as a key aspect of CIDP.

Main Methods:

  • A prospective, cross-sectional study involving 25 CIDP patients and 27 controls.
  • Assessment of sensorimotor disability, mood, and fatigue.
  • 14-day actigraphy, sleep diaries, chronotype, and PSQI questionnaires to evaluate sleep-wake behavior.

Main Results:

  • CIDP patients reported worse subjective sleep quality, higher fatigue, and increased depressiveness.
  • Actigraphy revealed significantly reduced Wake After Sleep Onset (WASO) in CIDP patients.
  • Sleep abnormalities were not correlated with clinical disability scores.

Conclusions:

  • CIDP is associated with objectively reduced sleep efficacy and increased nocturnal arousals.
  • Sleep disturbance is a genuine and underrecognized NSMS in CIDP.
  • Addressing sleep issues may be crucial for managing CIDP patients.