Nicolas Henri Jacob - Illustration for Traité complet de l’anatomie de l’homme comprenant la médecine opératoire (1831-1854) by Jean-Baptiste Marc Bourgery Illustration of dissection of the lips and face, showing salivary glands, branches of the facial nerve (cranial nerve VII), trigeminal nerve (cranial nerve V), and glossopharyngeal nerve (cranial nerve VII). Teeth, with full permanent dentition shown, masticatory muscles and jugular partly shown. Lateral view.
0084- Anatomy of the autonomic nervous system. The red lines represent the parasympathetic nervous system (craniosacral division). The black lines represent the sympathetic nervous system (thoracolumbar division). (The oculomotor, facial, glossopharyngeal, and vagus nerves are cranial nerves, shown here to illustrate their autonomic functions.)
Neuralgia falls into two categories: central neuralgia and peripheral neuralgia. This unusual pain is thought to be linked to four possible mechanisms: ion gate malfunctions; the nerve becomes mechanically sensitive and creates an ectopic signal; cross signals between large and small fibers; and malfunction due to damage in the central processor.