What does the ghost head in Japanese tattoo mean?

Prajna is often used as the subject of expression in Japanese tattoo patterns, but what is his reason? The Prajna in the tattoo is not the same as the Prajna Paramita Sutra. Prajna in Buddhism refers to the wisdom of the Buddha, while Prajna in tattoos is the face of a female ghost, representing an angry face, but more importantly, representing the jealousy of women. Prajna is a kind of ghost in Japanese legend, or rather a kind of resentment, which is said to be an evil spirit formed by women's strong jealousy and resentment.