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Painful limbs/moving extremities
S Papapetropoulos1, A A Argyriou
1Division of Movement Disorders, Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL 33136, USA. spapapetropoulos@med.miami.edu
Abstract:
Painful limbs/moving extremities (PLME) is a disorder characterized by spontaneous, complex, slow (1-2 Hz) involuntary toe or finger movements. The movements that can be bilateral or unilateral are usually accompanied by pain in the affected limbs. Painless variants are less common. PLME has been associated with peripheral and central nervous system disease although idiopathic cases have been reported. Its etiopathogenesis is unknown and treatment approaches remain largely empirical. Nerve blocks and botulinum toxin type A injections as well as oral medication have had some measure of success. Current theories suggest that central oscillator(s) at the spinal or supraspinal levels may be involved. Future research in PLME should include prospective electrophysiological and functional imaging studies as well as clinical trials with botulinum toxin injections and oral pharmacological agents.
Insights
Painful limbs/moving extremities (PLME) causes slow, involuntary toe and finger movements, often with pain. Research is ongoing to understand its causes and improve treatments like nerve blocks and botulinum toxin.
Area of Science:
- Neurology
- Movement Disorders
Background:
- Painful limbs/moving extremities (PLME) is a neurological disorder.
- Characterized by slow, involuntary toe/finger movements, often painful.
- Etiopathogenesis remains unknown; treatments are empirical.
Purpose of the Study:
- To summarize the current understanding of PLME.
- To highlight knowledge gaps in its etiopathogenesis.
- To suggest future research directions.
Main Methods:
- Review of existing literature on PLME.
- Discussion of current treatment strategies.
- Exploration of proposed pathophysiological mechanisms.
Main Results:
- PLME involves spontaneous, slow (1-2 Hz) involuntary movements.
- Associated with CNS/PNS diseases or idiopathic.
- Nerve blocks, botulinum toxin, and oral medications show some success.
Conclusions:
- PLME requires further investigation into its underlying mechanisms.
- Future research should focus on electrophysiology, imaging, and clinical trials.
- Refined therapeutic strategies are needed for effective PLME management.
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