TY - CHAP
T1 - Functional Jerky Movements
AU - Dreissen, Yasmine E. M.
AU - Gelauff, Jeannette M.
AU - Tijssen, Marina A. J.
N1 - Publisher Copyright: © 2022, Springer Nature Switzerland AG.
PY - 2022
Y1 - 2022
N2 - Functional jerky movements (or functional myoclonus) are commonly seen in patients with functional movement disorder. Positive features both from history and clinical examination are important for the diagnosis. However, due to their heterogeneous and paroxysmal nature a home-made video-recording of the jerky movements can be essential to make the diagnose by a movement disorder specialist. Supportive clinical clues include abrupt symptom onset often triggered by a physical event, whereas entrainment and distractibility are supportive signs during physical examination. Localization of the jerky movements, especially proximal localization, is supportive, and can also be helpful in distinguishing functional jerks from tics and myoclonus, which are the most important differential diagnostic considerations. Additional neurophysiological tests include polymyography and electroencephalography-electromyography (EEG-EMG) co-registration in order to demonstrate a readiness potential (RP). Management includes disease education and specialized physical therapy.
AB - Functional jerky movements (or functional myoclonus) are commonly seen in patients with functional movement disorder. Positive features both from history and clinical examination are important for the diagnosis. However, due to their heterogeneous and paroxysmal nature a home-made video-recording of the jerky movements can be essential to make the diagnose by a movement disorder specialist. Supportive clinical clues include abrupt symptom onset often triggered by a physical event, whereas entrainment and distractibility are supportive signs during physical examination. Localization of the jerky movements, especially proximal localization, is supportive, and can also be helpful in distinguishing functional jerks from tics and myoclonus, which are the most important differential diagnostic considerations. Additional neurophysiological tests include polymyography and electroencephalography-electromyography (EEG-EMG) co-registration in order to demonstrate a readiness potential (RP). Management includes disease education and specialized physical therapy.
KW - Clinical neurophysiology
KW - Functional movement disorder
KW - Jerks
KW - Myoclonus
KW - Tics
UR - http://www.scopus.com/inward/record.url?scp=85126197120&partnerID=8YFLogxK
U2 - https://doi.org/10.1007/978-3-030-86495-8_9
DO - https://doi.org/10.1007/978-3-030-86495-8_9
M3 - Chapter
T3 - Current Clinical Neurology
SP - 103
EP - 113
BT - Current Clinical Neurology
PB - Humana Press Inc.
ER -