• CNS Alteration (central)
• Cervical sympathetic injury (unilateral)
• "Hysterical" sudoriferous hyper-excitability
• "Troubled reflex" with taste nerves, sensation nerves, or reflex alone (local)
• CN V, CN VII (local) injury: neuralgias, hereditary, post-surgery/injury "irritation of sudoral fibers and (sweating) follows"

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