幼兒玫瑰疹的病源大多數是由一種叫「人類庖疹病毒第六型(Human herpes virus type 6)」的病毒傳染而來;如同許多的疾病一樣,它可以經由空氣、飛沫等傳染途徑,而在密閉的空間內是很容易被感染到的。被感染的小病人,在潛伏期之後,會無緣無故、突然地發燒三至四天,而且體溫常會高達39度,甚至40度;幸運的是,即使如此高燒不斷,小寶寶並不會因此而有病懨懨的情形,精神、活動力也不致於太差,且一般不會有流鼻水、咳嗽、結膜炎等現象產生。
My daughter had it when she was around 1 year old. I had never heard of 玫瑰疹 before that time and was very worried because of the high fever associated with it. High temp around 39-40 C and will drop after taking the medication. Once the effect of med was gone, then high temp again. This last for a few days. Once the fever was gone, 玫瑰疹 started to show up. Such 玫瑰疹 will disappear by itself after a few days and no treatment was required.