This disease is one of the most common viral diseases, especially in children's groups. The causative agent is herpes virus 6 and 7. The incubation period is approximately 10 days, and the disease begins with a sudden rise in temperature to 40 °C, which usually lasts 3 days, after a sudden drop in temperature, a confluent small rash appears, mainly on the trunk, but it can also be on the face, upper and lower limbs. The mucous membranes may also be red and the lymph nodes may be enlarged. The seeding usually subsides spontaneously within 2-3 days.