However, each individual may experience symptoms differently.The primary symptom is a red rash that:Can appear several days after infection, or not at all.Can last a few hours or up to several weeks.Can be very small or very large (up to 12 inches across).Can mimic such skin problems as hives, eczema, sunburn, poison ivy, and flea bites.Can itch or feel hot, or may not be felt at all.Can disappear