The term 'high state of excitement' can be summarized as a FEVER, which is a five-letter word. A FEVER is a medical condition characterized by an abnormally high body temperature, usually accompanied by shivering, headache, and fatigue. It is often caused by infection, but can also be caused by other factors such as heat exhaustion or certain medications. In some cases, a FEVER can be a sign of a more serious underlying condition.