Patron of prisoners, sick people, infirmaries, hospitals, doctors, surgeons, pharmacists, grave diggers, art dealers, farmers, gardeners, brush binders, plasterers, rocket makers; against plague, epidemics, cholera, foot, leg and knee diseases, rabies, accidents.
Rochus is depicted in pilgrim outfit, showing his plague bump above his knee, with a dog that sometimes carries bread in its mouth, or an angel tending to the wound.
His feast day is August 16.