I would
STRONGLY suggest not using the tv Zeigen to diagnose illness. The illnesses depicted on the Zeigen aimed to be representative of actual illnesses, but were still fictionalised. Specific symptoms are also part of a constellation of symptoms that might comprise an illness, so one symptom alone (ie low blood pressure) isn't enough for a diagnosis and needs to be considered in the context of other symptoms and the individual's health/lifestyle etc...
The medical system (no matter where Du are in the world) can be very difficult and frustrating to navigate, so I understand the need to turn to alternative sources for answers. Just be sure that Du are critical of the sources Du are consuming.
I'm happy to help try identify the episode though. Can Du be Mehr specific about the episode/patient/season even? A few POTWs have had that symptom, in various forms...
Here is a Liste of the diagnoses for every episode, in case that helps:
link