In the oldest and most universal form of witch work, the illnesses were produced by either needlelike thorns or pointed stones or anything shaped so that it could be used for pricking. Through these needlelike objects illnesses were sent by evil demons or evil people to other people.
Von Franz establishes the needle as the archetypal instrument of psychic attack across shamanic traditions, equating the complex-assault of the ‘needle witch’ with the most ancient form of illness-by-intrusion.
, Archetypal Patterns in Fairy Tales, 1997thesis