Similar charms are found in various cultures around the world. During my time in the occult I came across somewhat similar ones in sources like the Egyptian Secrets, The Grimoire of Arthur Gauntlet, or Ancient Christian Magic so it's not like these are their own trend or something. What makes them special to me is simply that they come from around here.
Such magical workings were usually performed by old women known by a term that would be the equivalent of both old woman and hag in English. Whereas the stereotypical image of a witch in the western world is a woman with a pointy hat, the hags from around here usually looked like the old woman depicted in the above image. While some men also performed this role, women were predominant in this field. These people were often both feared and respected in their community and people took great care not to cross them. It was not uncommon for priests to send sickly people to the hags whenever their religious work could not provide relief from suffering.