Publicado 4 números por año
ISSN Imprimir: 0896-2960
ISSN En Línea: 2162-6553
Indexed in
Central Pain States: Etiology and Management in Rehabilitation
SINOPSIS
Central pain occurs when the central nervous system is damaged and results from either brain or spinal cord injury. Damage to the spinothalamic tracts and associated pathways is necessary to lead to central pain but is not sufficient to cause this condition. The symptoms and quality of pain perceived in conditions giving rise to central pain differ considerably from pain arising from non-neural tissue damage. The hyperalgesia that occurs in central pain states results from alterations in NMDA receptor activity associated with the influx of calcium into neurons. Differentiation needs to be made between pain arising from musculoskeletal strains and from spasticity before treating central painful conditions. The treatment ladder includes tricyclic antidepressants and anticonvulsants as first-line treatments; NMDA antagonists, such as ketamine; followed by motor cortex stimulation or stereotactic neurosurgical techniques, if drugs are unsuccessful. The opioid drugs are much less effective in central pain conditions in which there is reduced opioid-receptor availability.