Excellent review article-
http://www.ncf-net.org/library/Pearn-NeuroOCiguatera.htm
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Ciguatera is a classic board question.
from the article-
“Rather, cold or even room temperature objects, when touched, produce a disagreeable burning sensation; and warm objects produce a sensation described variously by victims in such terms as “ice burning cold”, “chilled”, or “cold-sharp”. Warm fluids are particularly distressing and showering or bathing may be too painful to endure by some severely poisoned victims.”