Abstract

Piloerection which is considered predominantly vestigial in humans, has its basis in the autonomic circuits of the brains. It can herald a disorder especially form the temporal lobe. We describe three cases with distinct etiologies to highlight the same. Case 1: A 52-year man presented with recurrent episodes of piloerection accompanied by autonomic symptoms and was diagnosed to have temporal lobe glioma. Case 2: A 36-year woman presented with recurrent episode of pioerection accompanied by chills and was found to have temporal lobe cyst with contralateral oedema. Case 3: A 61-year man developed unilateral piloerection and chills and was found to have Lgi1 encephalitis. This case series highlights the significance of ictal piloerection, the diverse etiologies, its localization to temporal lobe structures, its association with the limbic system, and the unique ipsilateral lateralization seen with this semiology. La piloerección, que se considera predominantemente vestigial en humanos, tiene su base en los circuitos autónomos del cerebro. Puede anunciar un trastorno especialmente del lóbulo temporal. Describimos tres casos con etiologías distintas para resaltar el mismo. Caso 1: un hombre de 52 años presentó episodios recurrentes de piloerección acompañados de síntomas autonómicos y se le diagnosticó glioma del lóbulo temporal. Caso 2: una mujer de 36 años presentó un episodio recurrente de piloerección, acompañado de escalofríos y se encontró que tenía un quiste en el lóbulo temporal con edema contralateral. Caso 3: un hombre de 61 años desarrolló piloerección unilateral y escalofríos y se encontró que tenía encefalitis Lgi1. Esta serie de casos destaca la importancia de la piloerección ictal, las diversas etiologías, su localización en las estructuras del lóbulo temporal, su asociación con el sistema límbico y la lateralización ipsilateral única observada con esta semiología.

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