Brain shutdown feeling, nausea, chills and bowel urgency
M35. About five years ago, I started experiencing something unusual. It began gradually, without any clear cause, with a strange sensation as if my brain was “shutting down” or trying to make me faint—although I never actually did.
This feeling came with strong discomfort that I can only describe as a kind of “brain nausea,” accompanied by physical nausea, chills or cold sweats, and an urgent need to use the bathroom (usually ending in a bowel movement). These episodes would last the entire day. Even trying to sleep was difficult, as the sensation would sometimes wake me up during the night.
Most of the times ending the following morning with a headache. That headache was always so good because it meant it finished.
At first, these episodes were relatively frequent, occurring over a period of about two months. Over time, they became rarer, eventually happening maybe once a year or even less.
It all started one night when I was extremely tired and couldn’t fall asleep. I became slightly panicked, and shortly after that, these sensations began. Sometimes it felt like something started in my head and then spread through my body, as if it needed to “exit” somehow.
I’ve had multiple medical checkups, but nothing abnormal was found.
Today it’s happening again, and it feels very disturbing and scary, which is why I’m asking if anyone has experienced something similar or has any idea what it might be.