Medical and neuropsychiatric phenomena depicted in two Spanish medieval texts of Marian miracles

In the history of Christianity, veneration of the Virgin Mary reached its greatest intensity in the XIII century. Her perceived impact on daily life was tremendous and not surprisingly this extended to the spheres of disease and healing. The purpose of this study is to compare the medical and neuropsychiatric findings in two XIII century Spanish texts of Marian miracles, both examples of the popular Catholicism (vs. official catholic doctrine). We analyzed the medical and neuropsychiatric events in the Cantigas de Santa Maria (Canticles of St. Mary, CSM), composed at the court of Alfonso X and the Milagros de Nuestra Señora (The Miracles of Our Lady, MNS), written by Gonzalo de Berceo. Among the 25 miracles reported in the MNS, medically relevant facts were addressed in 19 miracles with a total of 23 recorded events (including resurrection or escape from death in five) and demonic possession in three (one with witchcraft/deicide). The most common medical subjects were ergotism, obstetric-gynecological, sudden death, intellectual disability/illiteracy, encephalopathy/alcohol intoxication, suicide (with self-mutilation/castration), infanticide, infections, and absence of body decomposition after death. The 427 canticles in the CSM contain 270 medically relevant facts. Neuropsychiatric conditions were alluded to in 98 songs. Blindness and dystonia/weakness/deformities were the most common phenomena. Illuminations detailed many of the medical facts in the CSM, but not in the MNS. Medically relevant facts were described in both texts, but with more details in the CSM. Neurological conditions were more often described in the CSM, psychiatric conditions in the MNS.