St. Anthony's fire
St. Anthony's fire (also known historically as Ignis Sacer and Holy Fire) may refer to one of the following diseases:
- Ergotism (this meaning is particularly common in France and Germany)
- Erysipelas (this meaning is particularly common in Britain and the United States)
- Herpes zoster (this meaning is particularly common in Italy and Malta)
St. Anthony's fire may also refer to:
- St. Anthony's Fire (Doctor Who), a novel by Mark Gatiss