Can allergies cause red spots on tongue?

Possible allergies: Typical allergic reactions that affect the mouth and tongue lead to itching and swelling. Red spots without itching may be a different issue. An examination by a physician can help sort this out.

Yes They Can: Allergies can cause any exposed are to swell and be red. The other possible diagnoses are candida, normal engorgement of taste buds, oral cancer, benign red lesions, among other.