Which saint do you pray to when someone is ill?

The honest answer first

The Church has never assigned saints to illnesses like specialists on a rota. There is no register that says cancer goes to one saint and a broken hip to another. Saints are not a switchboard, and a prayer addressed to the wrong one does not get lost.

You can pray to God directly, in your own words, tonight, without looking anything up. That is a complete prayer. Everything below is custom and companionship, not procedure.

Peregrine Laziosi, and why cancer patients are given his name

If you search for a saint for a person with cancer, you will keep finding Peregrine. He is the one people mean. It is worth knowing who he actually was, because the story is not the soft kind.

He was born in Forlì, in Italy, in 1260, and he started out as a young man shouting in the streets against the Pope. A friar he had knocked down got up and said something to him that changed his life. He joined the Servite order, and spent most of his adult life in one town, hearing confessions.

He developed cancer in his foot. The leg was scheduled to be amputated, and by the account that has come down to us, the night before the operation he prayed in front of a crucifix and the wound was healed. He lived another thirty years, and the leg stayed with him. That is why people with cancer are still given his name, seven hundred years later.

He is also, less famously, the patron of people with AIDS, and of those who are told there is nothing more to be done. Both of those follow from the same story.

The others, and what each is actually known for

Our Lady of Lourdes is the one most closely tied to the sick as a whole. The shrine in southern France has received pilgrims in search of healing since 1858, and the Church has officially recognised a small number of healings there after investigation. Small number is the point. The Church does not declare healings lightly.

Saint Camillus, a sixteenth-century Italian, is the patron of the sick, of hospitals and of nurses. He was a gambling soldier with a wound that would not heal, and he ended up running a religious order whose members took a vow to serve the sick even at the risk of their own lives. If you have ever been in a Catholic hospital, that is partly his doing.

Saint Raphael is the archangel of healing. His story sits in the book of Tobit, where he travels unnoticed alongside a young man and cures his father's blindness. He is asked for in almost every prayer for the sick, sometimes without the person realising who he is.

Saint Luke was a physician before he wrote a Gospel, and is the patron of doctors. Saint Rita is asked for in impossible causes, which is often what an illness becomes. Saint Jude is asked for in desperate cases, and it is worth knowing that he is not Judas Iscariot; people confuse the two constantly, and that confusion is the whole reason he is invoked in situations that feel hopeless.

What the Church does not teach

It does not teach that finding the right saint guarantees a cure. It does not teach that a person dies because someone prayed to the wrong name, or not hard enough, or without a candle. If anyone tells you otherwise, they are speaking for themselves.

It does not teach that saints replace doctors. Camillus's own order ran hospitals, not chapels instead of hospitals. The practical and the prayerful have always been done together, and a person who prays for a cure and also takes the treatment is doing exactly what the Church has always done.

How to actually do it

Say the person's name. Say what is wrong, plainly, and ask for what you want. You do not need a formula, a candle, or a saint who matches the diagnosis. If a particular saint gives you something to hold on to, use him, but nobody is keeping score.

And if you want the Church to pray rather than only yourself, that is what a Mass intention is for. You give a name and a need; a priest offers the Mass for it. You do not have to be a practising Catholic to ask, and you will not be asked to explain yourself first.