causes geographic tongue
Causes of Geographic Tongue. Geographic tongue is due to loss of the finger-like projections on the tongue from nonspecific causes. Potential aggravating factors include vitamin B deficiency and irritation from hot and spicy foods.auses of Geographic Tongue. Geographic tongue is due to loss of the finger-like projections on the tongue from nonspecific causes. Potential aggravating factors include vitamin B deficiency and irritation from hot and spicy foods.