RT Journal
A1 Evans D
T1 THe tongue in the present influenza epidemic
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1919
FD February 8
VO 72
IS 6
SP 443
OP 443
DO 10.1001/jama.1919.02610060057028
UL http://dx.doi.org/10.1001/jama.1919.02610060057028
AB To the Editor: 
    —My experience and observations have led me to the conclusion that there is much to be learned from inspection of the tongue, even at the first call, in a suspected case of influenza. Special reference to the tongue will disclose a series of almost remarkable phenomena, so uniform in appearance as to be pathognomonic of influenza and all but a positive factor in the chain of diagnostic symptoms (objective, of course). These symptoms appear early in the course of the disease, near the second or third day of the onset or within the limit of seventy-two hours. In no other disease does the tongue present such an appearance except in typhoid in the second or third week. The tongue is long, wide, thick, broad and flat, not curled as to its point or lateral edges. The edges are often tooth indented. Its color is of a characteristic