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Parietal pseudothalamic pain syndrome. Clinical features and anatomic correlates
1Department of Neurology, Massachusetts General Hospital, Boston 02114.
Archives of Neurology
|October 1, 1992
Summary
Parietal lobe lesions caused spontaneous hemibody pain in six patients. This pain, linked to sensory deficits, may result from thalamocortical disconnection due to white matter damage.
Area of Science:
- Neuroscience
- Neurology
- Pain Medicine
Background:
- Parietal lobe lesions can cause sensory disturbances.
- Understanding the neuroanatomical basis of spontaneous pain is crucial for effective treatment.
Observation:
- Six patients presented with spontaneous hemibody pain (burning or icelike).
- Associated symptoms included impaired pinprick and temperature sensation.
- Computed tomography revealed white matter lesions deep to the caudal insula and posterior parietal cortex.
Findings:
- Lesions commonly affected white matter connecting the posterior parietal cortex (including SII) and thalamus.
- This suggests a thalamocortical disconnection syndrome.
Implications:
- Disruption of thalamocortical pathways may underlie spontaneous pain.
- Further research into thalamocortical circuits is needed for pain management.
- This study highlights the role of the parietal lobe in pain perception.