An enlarged tongue could be caused by a large number of medical problems, so diagnosis is often tricky. It can be caused by an infection or allergy, or sometimes there are genetic factors that come into play. As the tongue is filled from the lymphatic system, there is a possibility that a disorder with this system might cause the swelling, but only a medical professional will be able to make that diagnosis. If a tongue has swollen up rapidly it is likely to be an allergic reaction, which could be very serious it if interrupts a person’s ability to breathe, so medical help should be sought out immediately.
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