Some people who have experienced head trauma will develop a rhinorrhea after eating. This appears to be due to faulty regeneration of parasympathetic fibers supplying the submucosal glands.


Clinical findings:

(1) history of head trauma

(2) watery rhinorrhea after eating


Medications such as topical atrophine or ipratropium bromide may reduce the rhinorrhea.


Differential diagnosis:

(1) gustatory sweating (Frey syndrome)

(2) food-induced gustatory rhinitis (see previous section)

(3) post-traumatic CSF rhinorrhea

(4) food allergy (especially to spices)


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