Relics

In faith healing, relics were often important to the process, and if
a possession that was thought to have belonged to a saint seemed
to cure effectively, then myths about the objects grew.

Religious Healing

Medical knowledge of the day was inadequate for solving many
health problems, so healing through prayer and divination seemed
like a logical option. Since physicians and healers could be expensive
and were not available in some communities, faith healing
offered advantages. Anyone could pray for help at any time, and
every community had religious leaders to whom they could turn
for this type of healing.

Treatment: Popular Medicines

Medicines were used by both empirics and university-trained doctors as part of most treatments. Medications were compounded by the medical healer or physician, or later on, by the local pharmacist
from ingredients kept in an apothecary. Trial and error was very much a part of the treatment process. The results were mixed, ranging from effective (there was some knowledge of good pain killers and laxatives) to harmless (similar to taking a sugar pill with possible improvement from the psychological expectation
of getting better) to dangerous (some remedies—or their dosages— were actually poisonous)

Diagnosis and treatment Methods

Medieval medical healers and physicians took diagnosis and
treatment of their patients very seriously.