This is a list of patron saints of ailments, illness, and dangers.
Abd-al-Masih – sterile women (in Syria)
Saint Abel – patron of the blind and the lame
Abhai – poisonous reptiles
Agapitus of Palestrina – invoked against colic
Agatha – breast cancer
Agathius – headache
Agricola of Avignon – bubonic plague, misfortunes
Agrippina of Mineo – invoked against evil spirits, leprosy, thunderstorms, bacterial diseases, and bacterial infections
Albinus of Angers – against pirate attack
Aloysius Gonzaga – the blind
Amabilis of Riom – invoked against fire, snakes, and snake bites; also invoked against demonic possession, mental illness, poison, wild beasts
Andrew Avellino – sudden death
Andrew Corsini – riot, civil disorder
Anthony – skin disease, Saint Anthony's fire
Anthony of Padua – Missing people and lost things
Apollinaris – epilepsy, gout
Apollonia – toothache
Arthelais – kidnapping, illness
Aspren – invoked against migraine
Audoin (Ouen) – deafness
Augustine of Hippo – sore eyes
Adrian of Nicomedia – plague, epilepsy
Balbina – scrofula
Berlinda of Meerbeke – invoked against cattle diseases
Bernardino of Siena – chest problems, lung problems, gambling addictions
Bessus – protector of soldiers against the dangers of war; also invoked for fertility.
Blaise – ailments of the throat
Cajetan – invoked against illegal gamblings
Castulus – invoked against erysipelas, lightning, horse theft, wildfires, and drowning.
Catherine of Vadstena – against abortion, miscarriage
Chad of Mercia – against the losers, defeats, disappointed and unsuccessful.
Christina the Astonishing – against insanity, mental disorders.
Coloman – plague, sick horses, against hanging
Conrad of Piacenza -against hernias
Cornelius – invoked against epilepsy, cramps, afflictions associated with the nerves and ears.
Crescentinus – headache
Cyriacus – eye disease
Damien of Molokai – leprosy
Defendens – invoked against wolves and fires
Deicolus – childhood illnesses
Denise – against headaches and motorcycle/bicycle accidents
Deodatus of Nevers – against thunderstorm, evil spirits, and plague
Dometius of Persia -invoked against sciatica
Domninus of Fidenza – rabies
Dymphna – sleepwalking, epilepsy, insanity, mental illness
Edmund the Martyr of East Anglia - patron saint of pandemics
Emygdius of Ascoli – invoked against earthquakes
Engelmund of Velsen – invoked against toothache
Epipodius – victims of betrayal and of torture
Erasmus of Formiae or St Elmo – invoked against colic in children, intestinal ailments and diseases, cramps and the pain of women in labour
Eurosia – invoked against storms, hail storms, lightning
Expeditus – invoked against procrastination
Fiacre – Venereal disease sufferers, hemorrhoids
Fillan – mental illness
Florian – invoked against fire, floods and drowning
Four Holy Marshals – epidemics, diseases
Fourteen Holy Helpers – epidemics, bubonic plague or the Black Death
Gangulphus – eye and skin conditions; knee pains; invoked against adultery and marital difficulties
Gemma Galgani – invoked against spinal injuries, back pain, headaches, loss of parents
Genesius of Rome – actors, clowns, comedians, comics, converts, dancers, musicians, stenographers, printers, lawyers, epileptics, thieves, torture victims
Gerard of Lunel – invoked against epilepsy and headaches
Gerard Majella – pregnancy
Gereon – headaches, migraine
Gertrude of Nivelles – invoked against fever, rats, and mice, particularly field-mice.
Godelina – throat trouble
Gotthard of Hildesheim – invoked against fever, dropsy, childhood sicknesses, hailstones, the pain of childbirth, and gout.
Gratus of Aosta – against lightning; fear of insects
Guy of Anderlecht – invoked against epilepsy, against rabies, against infantile convulsions
Hemma of Gurk – invoked during childbirth and against diseases of the eye
Hermes – mental illnesses
Harvey – eye problems, eye disease
Hippolytus of Rome – sick horses
Hubertus - Rabies
Hugh of Cluny – fever
Hyacinth – those in danger of drowning
James the Great – rheumatism
John of Bridlington – women in difficult labor
Joseph – against doubt, against hesitation, dying people, expectant mothers, happy death, holy death, interior souls, people in doubt, pioneers, pregnant women, travellers, and fetuses.
Jude Thaddaeus – lost causes, desperate situations
Julia of Corsica – pathologies of the hands and the feet
Juliana of Nicomedia – childbirth, sickness
Kentigern – against bullies and verbal abuse
Lorenzo Ruiz – poor, immigrants, migrant workers, separated families
Leodegar (Saint Mungo) – blindness, eye disease, eye problems, sore eyes
Liborius of Le Mans – against gallstones, colic
Lucy of Syracuse – haemorrhage, eye complaints
Macrina the Elder – poverty
Mammes – protector of sufferers from broken bones and hernias
Marciana of Mauretania -invoked to cure wounds
Marculf – scrofula, diseases of the skin
Mary Magdalene – people ridiculed for their piety, penitent sinners, prostitutes, repentance, sexual temptation
Maria Goretti -victims of rape, crime victims, invoked against pedophiles.
Martin of Tours – Soldiers, Beggars, Alcoholics
Maturinus – invoked against mental illness and infertility
Saint Maurus – rheumatism, gout, epilepsy
Maximilian Kolbe – drug addiction
Maximin of Trier – invoked as protection against perjury, loss at sea and destructive rains
Saint Medard – toothache
Michael – against danger at sea, against temptations, holy death, sick people, storms at sea
Miliau – against rheumatism
Natalia of Nicomedia – plague, epilepsy
Nonnosus – diseases of the kidneys, invoked against physical defects, back pains, and school-related students' crises
Saint Olaf – difficult marriage
Saint Ovidius – auditory conditions and diseases
Paraskevi of Rome – protectress of blind people
Patroclus of Troyes – demons, fever
Peregrine of Auxerre – against snake bites
Saint Peregrine Laziosi – cancer
Saint Peter – involved against criminals
Saint Paulina – Diabetics
Pancras – cramp, headache, bearing false witness, perjury
Pharaildis – childhood diseases; difficult marriages; victims of abuse
Saint Pio of Pietrelcina – Stress relief and New year blues
Polycarp – earache, dysentery
Potamiana – protectress of rape victims
Saint Quentin – coughs, sneezes, and dropsy.
Quirinus of Neuss – invoked against the bubonic plague, smallpox, and gout
Quiteria – against rabies
Rasso – invoked against stomach pains, especially in children
Regina – against poverty, impoverishment, torture victims
Reinildis – to cure open wounds, against eye diseases
Reverianus - invoked against drought
Roch – Invoked against cholera, epidemics, knee problems, plague, skin diseases
Rita of Cascia – lost causes or impossible cases, marital problems, abuse
Sebaldus – against cold and cold weather
Scholastica – convulsive children; invoked against storms and rain
Servatius – invoked against foot troubles, lameness, rheumatism, rats, and mice
Silvia – invoked by pregnant women for safe delivery of children
Simon of Trent – torture and kidnap victims (no longer venerated)
Sithney – invoked against rabies
Suitbert of Kaiserwerdt – angina
Symphorian – syphilis, eye troubles
Theobald of Provins – invoked against fever; afflictions associated with the eyes; Dry cough; infertility; panic attacks
Trophimus of Arles – against drought
Tryphon – against infestations of bedbugs, rodents and locusts
Ubald – migraine, neuralgia, sick children, autism, obsessive compulsive disorder
Urban of Langres – invoked against blight, frost, storms, alcoholism, and faintness
Ursicinus of Saint-Ursanne – invoked against stiff neck
Ursus of Aosta – faintness, kidney disease, and rheumatism
Valentine – fainting, plague, epilepsy
Victor of Marseilles – invoked against lightning
Vitalis of Assisi – diseases and sicknesses affecting the genitals
Vitus – chorea/Saint Vitus' Dance, epilepsy, seizures, oversleeping
Walter of Pontoise – invoked against stress
Wilgefortis – people seeking relief from tribulations, in particular by women who wished to be liberated from abusive husbands.
William Firmatus – against headache
Willibrord – convulsions, epilepsy, epileptics
Winnoc – fever, whooping cough
Wulfram of Sens is called upon for protection against the dangers of the sea.
Patron saints of ailments, illness, and dangers Wikipedia (Text) CC BY-SA