Hi, @cromeo112 - thanks for the update on your mother and her neurologist appointment for the pressure in her head when sitting or standing, ringing in her ears, lightheadedness and previous spikes in blood pressure. I can imagine it's been hard not getting answers thus far.

I'd like to bring @lioness @johnbishop @judysmayo @ravenamore @aarniek @phillipc421 @redhead63 @ggacker into this discussion for their input as you try and figure out what might be going on with your mom.

Sounds as though an academic medical center might be appropriate, if you've not yet visited one with her. @jeannels @bandolsmom and @amberpep may have some thoughts for you on a practitioner who might provide further guidance with your Maryland area location.

Did you get any further information or explanation, cromeo112, on the inflammation of the mastoid bone?

Hi. Has she seen someone who has assessed her musculoskeletal system in her neck. There are certain muscles, that when tighten/spasm will cause pain that radiates into the ear scalp head area. One muscle in particular that can cause pain behind the ear, and attaches in the mastoid area. These headaches that start from the upper cervical area can cause all kinds of odd dizziness/pressure sensations, and often times you can not tell it is coming from the neck. ENTs are supposed to be educated on the Jaw area and how all of these muscles can mimic ear/sinus pain. But unfortunately most are not.
Just a thought.