Scrofungulus is a wizarding illness. It is a contagious disease and is provoked by an unknown magical bug. The "Magical Bugs" section of St Mungo's Hospital for Magical Maladies and Injuries treats this disease.
The name of the illness is apparently made from the word "scrofula" (the former name of tuberculous cervical lymphadenitis, a type of tuberculous that normally infects the neck), and "fungus". If the name is chosen intentionally to indicate the nature of this disease, the disease is most likely a type of fungus infecting the neck.
Behind the scenes
- The Wizard's Challenge asks whether it is this, Vanishing sickness, Dragon Pox or another illness that proved fatal for Abraxas Malfoy; thus, this may be fatal.
- Harry Potter and the Order of the Phoenix (Mentioned only)