This is very interesting. She has always seemed to be somewhat hypervigilant. At times, fidgeting constantly, with variable concentration, she had late 90s psychiatrists screaming ADD! ADD! She has difficulty with SNRIs, maybe pointing to excess norepinephrine? Since reaching adulthood, caffeine actually seems to have either no effect or a reaction opposite of what is expected. She has taken caffeine pills in an attempt to have more energy, but shortly after, she must sleep for a few hours. Whether this shows the little effect of caffeine relative to how very tired she always is or if it is a paradoxical reaction, we do not know. At times, in very noisy crowds, she feels like you do. But when she leaves, it is as if she can still hear the noise of the crowd. She will cover her ears, even though she knows the sound comes from the inside. She says it just feels like she should. Another reason that her situation is rather confusing, she actually does not have a hyperadrenergic form of POTS. She has what is believed to be unipolar depression. However, in a very new publication, I recently read a definition of mania: fast brain activity resulting in fast speech and actions. But, of course, like everywhere else, nothing was mentioned about the relationship between the speed of brain activity vs. perception of the speed of the atmosphere.