Final answer:
Acute phase of Chagas disease can cause symptoms such as fever, headache, rash, and enlarged organs. Untreated infection can lead to myocarditis or meningoencephalitis.
Step-by-step explanation:
In acute phase disease of Chagas disease, symptoms include fever, headache, myalgia, rash, vomiting, diarrhea, and enlarged spleen, liver, and lymph nodes. In addition, a localized nodule called a chagoma may form at the portal of entry, and swelling of the eyelids or the side of the face, called Romaña's sign, may occur near the bite wound. Symptoms of the acute phase may resolve spontaneously, but if untreated, the infection can persist in tissues, causing irreversible damage to the heart or brain. In rare cases, young children may die of myocarditis or meningoencephalitis during the acute phase of Chagas disease.