Pijavica

A Pijavica is a type of vampire found in Slovenian folklore said to be created when particularly evil people die after leading lives of extreme sin - of particular note is often the crime of incest (especially mother-son relationships) are said to have high probability of creating a Pijavica.

Once created, a Pijavica will stalk the night, often pursuing its own relatives and terrorizing them but also prone to attacking anything in range. They could be keep from entering homes via crushing garlic and placing wine on windows but they could die if set on fire (if awake) or if their grave could be traced, at which point they could be exorcised during the daylight hours, as they slept.