Slightly swollen tongue cause for alarm?

Absolutely: A swollen tongue is not normal... You need to determine the cause, and then treat it. A tongue that continues to swell can cause respiratory distress.

Number of Causes: of a tongue swelling include infections, allergies, injuries and systemic disorders, just to name a few. The majority of tongue problems are not serious and can be resolved on it's own. However, if you have a swollen tongue that doesn't go away within two weeks, you should consult a doctor or a dentist for evaluation.