St. Anthony's fire

St. Anthony's fire (also known historically as Ignis Sacer and Holy Fire) may refer to:


 * Ergotism, the effect of long-term ergot poisoning, traditionally due to the ingestion of alkaloids
 * Erysipelas, an acute infection, typically with a skin rash
 * St Anthony's Fire (novel), a 1994 Doctor Who novel by Mark Gatiss
 * Shingles, a painful viral disease, also called herpes zoster