Dear Sunshine,
Sure the head is the most important part of our body. According to TCM when the 5 important Organs Network is in Balance, the head is also in balance.
An example about the Ear, even the ear there are lots of Qi-points, see picture.
Well about Head-aches, why we worry about it?
Just take a Pain-killer than the problem is solved, right?
For a woman, the monthly cycle is a common head-ache, due to in-balance of the Hormone levels and blood-pressure.
If it is chronic, like Migrain head-ache, than we could look deeper into your chart.
Head-ache in general was caused by the imbalance of the Liver-network.
Your Resource element is a Water element, also the Indirect Resource. This covers your way of Thinking process.
Water is also a Fear-emotion, in worst case, Social Anxiety. The reason is that Water-element couldn't reach the Yang Wood DM.
Wood or the Liver needs that Resource Water element to support the Liver-network.
Fire in the Month-pillar obstruct the Water being reach the Yang Wood DM.
The most important aspect is your Spouse pillar, Yang Metal.
Metal will attack Wood (Liver), the main causes of the Head-ache is due to blockage of the Liver-network.
In other meaning, there will be pressure in your Marriage (husband) or men in your life.
Saphora