In the movie The Switch with Jennifer Aniston...at one point the mother (Jennifer) goes on a 2-day trip and leaves her 7-year-old child with some friends, at his request. Surprise! She is called to urgently come home to take him back. The child...from the separation conflict with the mother had...LICES :). NMG is also in the movie scripts.
Explanation - the separation conflict changes the skin structure favoring the appearance of lice that are made, not taken. Why out of two children who sleep in the same bed in camp, with the same level of hygiene, only one gets lice? Because only that one misses home so much...so much to the level of conflict.
Thank you, Dr. Hamer!