A patient reported that on (b)(6) 2016 they were at 10,000 feet and they felt stimulation three times stronger than they normally feel it.They felt their eyeballs, cheeks, and tongue vibrate.When they went back down in elevation, the sensation went away.Altitude compatibility was reviewed with the patient and it was recommended they follow up with their healthcare provider (hcp).The patient noted they have lead wires implanted in their head for "permanent brain freeze" symptom.On (b)(6) 2016 the patient reported that they got up to 14,000 feet in the mountains.They were told it could have been that their body oxygen level changed.When they climbed up their head did hurt a lot worse because it was at the point where electronics did not kill the pain any longer.The patient mentioned permanent brain freeze again and said they get flare ups and it has been like that even before the implant.It used to be so bad they would pass out.With the device, they do not pass out and the ins is doing a good job.Sometimes they still get dizzy.The flares ups were getting worse since the year prior to the report.The implantable neurostimulator (ins) was indicated for non-malignant pain.
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