Cutaneous Reactions to Triatomine (Kissing Bug) Bites and the Risk for Chagas Disease.

Triatomine bugs are widely distributed globally and are important vectors of trypanosomiasis in the New World. The Romaña sign, characterized by unilateral swelling of the eyelid, is common in triatomine and bedbug bites. The range of Trypanosoma cruzi, the cause of Chagas disease has expanded with the organism detected in triatomine reduviids in suburban areas of the southwestern United States.