[Stigmata: From Saint-Francis of Assisi to idiopathic haematidrosis].

"Religious" stigmata describe body marks and sores that reflect the crucifixion wounds of Christ (hands and wrists, feet, flank, back, shoulders, forehead) and which are transferred to an individual through fervent prayer. "Non-religious" stigmata usually describe spontaneous episodes of bleeding with no identifiable cause outside any religious context. Irrespective of the setting in which they occur, such lesions are extremely striking. This review intends to summarize what is currently known about stigmata in the light of current medical knowledge, while stressing that the "spontaneous" nature of these lesions does not rule out a genuine medical cause.