It is probable that the influence of cold as a cause of disease has been greatly overestimated. Unless the reduction in temperature be sufficient to interfere with the vitality of the part or to prevent reaction, it seems more likely that it acts merely as a contributory factor, possibly favoring the activity of pathogenic micro-organisms almost always present. Perhaps also the cold has some influence upon local as well as upon general metabolism, but whatever the explanation, there seems to be no doubt that exposure to cold in some way favors the development of a not inconsiderable number of morbid conditions. Conspicuous among these are inflammations of nerves, and here we have a striking example in facial neuritis, the palsy resulting from which is the most common form of paralysis due to disease of a single nerve and for which cold is held responsible in about three-quarters of the cases.
CATARRHAL INFLAMMATION OF THE MIDDLE-EAR AS A FACTOR IN THE PRODUCTION OF FACIAL PALSY.. JAMA. 1902;XXXVIII(21):1375-1376. doi:10.1001/jama.1902.02480210033009