Dear @El_Capitan_Nemo
In the name of the community I think everyone would agree a Headache field that covers the most common types of headaches, such as Tension, Migraine, Cluster, Stress, Anxiety etc. would be really useful and it’s much need it by most of people. I’m aware there is already a field for Sinus
There is already a small device in the market called Zok and what it does is by provides relief by stimulating the tympanic membrane, which activates the trigeminal nerve and a number of cranial nerves inside the head through inner-ear pressure modulation, thereby providing instant alleviation of pressure and tension inside the head, which are associated with the symptoms of headaches and migraines.
The below page provides the science of it and it explains quite well the mechanism in how and why it works.
Much gratitude