In my studies to become a shiatsu practitioner I was taught that diagnosis the sublingual veins played an important role in being able to diagnose the kidney energy. My teacher was a shaman as well as an experienced shiatsu practitioner/healer. I cannot find any theory online about it though. I have been thinking about buying the Tongue Diagnosis book by Giovanni Maciocia, but a colleague practitioner says it may not be in there.
My teacher explained that the veins should be clearly visible but not with clots or anything. He also said that there’s a direct energetic connection between the tongue and the kidneys.
On the internet I only found information regarding blood stasis as a cause of purple veins there or dark sublingual clots.
Does anyone of you have experience or knowledge regarding diagnosing the sublingual veins?
Thank you, I would really appreciate it.
Kind regards from the Netherlands