Hello girls, I don't know what it is with my daughter, yesterday she w…

Hello girls, I don't know what it is with my daughter, yesterday she was playing in shorts, maybe something bit her, I noticed it in the morning, she brushed it off until redness, now it doesn't bother her much, the redness went away, looks like this now. Allergy to laundry detergent has not bothered her for a long time, we use the same product as always. Can she eat 5 Arugula pieces a day? Could it cause an allergy like that? If it's a bite from a mosquito or ant, what do you use to treat bites, please tell me ?