Some Muslim sects self-flagellate during certain 'holy days'.................
I remember teens in the 1950s and 1960s who, living in an area tattoos were illegal to make, would take a bottle of ink and do self tattooing. They always looked horrible.
The American Indian would do tattoos and also slash themselves with knives when a kinsman died.
Mountain man Andrew Garcia (Tough Trip Through Paradise) mentions his woman cut herself when a kinsman died. Some of the slashes were a half inch deep.
Some Muslim sects self-flagellate during certain 'holy days'.................