Dear
@Gmuli hi ..
Your refer that :
Shen as Yang Metal can show the head as well
I would adding :
Shen as yang branch on yin line with Gou Chen (earth) may represent "Yang Ming " in Chinese acupuncture .. and has two component meridians "large intestine meridian" + "Stomach meridian" ...both travelling on yin portion of body on neck and connect with stomach and large intestine organs .. connect the Upper with lower portion of body and easily being unbalanced with unhealthy eating , causing obesity .. and other metabolic bisease ..!! Have something to do with vicious fire ..
A kind of (Shen -- + -- Si) Liu He ...
I would include thyroid gland in balance due to 5th Shen line ...or headaches / head trembling / insomnia / .. or something to add ?
But could you tell what you mean ?..
Is there any problem in head portion ?
Thanks ..