THE HE CLINICAL FEATURES of familial dysautonomia have been described in careful detail. To the clinician familiar with the disease, the diagnosis does not present serious difficulties when the manifestations are fully developed. However, in infancy, before the characteristic signs are evident, the presenting signs of poor feeding, vomiting, and aspiration pneumonia are more commonly attributed to brain damage. Occasionally, in the older child, the clinical picture may also be insufficiently distinct to permit a definite diagnosis.
The purpose of this note is to bring to the attention of pediatricians the fact that simple visual examination of the tongue may be sufficient to suggest and possibly to establish the diagnosis of familial dysautonomia. This observation has been reported and discussed in greater detail elsewhere.2,3 The observation has been confirmed by others.4
The dorsal surface of the tongue is normally covered with conical, filiform papillae. The larger fungiform papillae
SMITH AA, FARBMAN A, DANCIS J. Tongue in Familial Dysautonomia: A Diagnostic Sign. Am J Dis Child. 1965;110(2):152–153. doi:10.1001/archpedi.1965.02090030162010
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