trigeminal Published December 31, 2012 at 506 × 303 in STD Awareness: Oral Herpes The trigeminal ganglion, colored yellow and located near the ear, is a cluster of nerves where HSV-1 can hide out during times of dormancy. From http://info.med.yale.edu/caim/cnerves/cn7/cn7_graphics/fig7_21.gif