A 49-year-old man developed a syndrome of crural-axial dystonia combined with segmental myoclonus 3 months after the onset of meralgia paraesthetica of the left leg. The association of this remarkable movement disorder with the pain syndrome is discussed.
Meralgia paraesthetica: Differential diagnosis and follow-up
✍ Scribed by Marinus J. Wiezer; Hessel Franssen; Gabriël J.E. Rinkel; John H.J. Wokke
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 226 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0148-639X
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✦ Synopsis
Meralgia paraesthetica (MP) is characterized by sensory disturbances on the anterolateral side of the thigh. MP is often caused by lateral femoral cutaneous nerve (LFCN) entrapment, but sometimes by lumbar plexus or L2 or L3 root Although cortical somatosensory evoked potentials (SEPs) in response to LFCN stimulation are frequently abnormal,'~5~'0~'' they do not differentiate between LFCN and more proximal lesions. We investigated if this distinction can be made by a special SEP protocol. We assessed how often MP is caused by plexus or root lesions, and studied the follow-up of patients with LFCN entrapment.
PATIENTS AND METHODS
Clinical criterion for MP was abnormal sensation over the lateral thigh without further abnormalities. Exclusion criteria were: area of abnormal sensation extending beyond the medial axis of the thigh or patella, previous operation for MP, bilateral MP, neuromuscular disease.
Twenty-five patients (11 women, 14 men, mean age 49 years, range 27-73) were included. In the first 6 months none of the patients with LFCN entrapment received treatment. Symptoms were evaluated after 6 and 12 months. SEPs. SEPs were elicited and recorded by surface electrodes. The center of skin areas innervated by each LFCN (upper one third of the lateral aspect of
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