陰の亀積
いんのかめしゃく

Translation: yin turtle shaku (a type of infection)
Habitat: the abdomen

Appearance: In no kameshaku resemble turtles with grey heads and shells, and black arms and tails. Several white, snake-like worms coil around their bodies.

Behavior: In no kameshaku kill their hosts. Afterwards, they remain inside of the body as it decomposes. Finally, they emerge from the bellies the putrid corpse.

Interactions: In no kameshaku can treated by ingesting medicine made from kochia (Bassia scoparia). It is a strong herb with diuretic properties. If this herb is mixed with regular meals and ingested, the in no kameshaku will be exterminated.

Origin: Shaku is one of a few categories that medieval doctors divided infectious spirits into. It was believed that different types of energies would accumulate as shaku in the organs until they became a large mass, which would then cause various symptoms to occur.