“…A consistent fact in the patient's history that should be looked for, appears to be some form of preceding trauma, such as tooth extractions or jaw fracture. In almost every reported case, an aetiological factor of odontogenic origin will be found (Hoist and Lund, 1979). This proved to be true in our patient, in whom an unspecific dental infection had preceded the acute onset of the disease, by two weeks.…”