I'd like to ask your openion about a case: a 22 years old single man, presented with maculopapular rash all over body with itching & of sudden onset. No other symptom exists. His temperature is 37.4 C. he lately gave history of ant bite. My question is : can an ant do all this? I mean is it the cause or shall I search for something else inspite of absence of any other clue?