>>1907865

Genetic disease, for which treatment is blood transfusions.

https://www.healthline.com/health/porphyria#Treatment

Perhaps since it's genetic, it runs in their bloodlines? See reference to their color: PURPLE.

Still looking.

>>1907865

>>1907969

There is a drug made to treat it.

Only one available in the US and by prescription only.

Another one is available outside the US, without a prescription.

Is this why many of them are living/traveling outside the US?