Panic is a sudden sensation of fear that is so strong that it inhibits rational thought. It is sometimes the absolute best reaction in a situation of imminent danger and the fear response exists for our own safety. Sometimes though, panic is not the best response.
Some years ago I found myself in a panic when I thought I had lost my youngest daughter who had only just started to walk. I was out in town with my other two children, who were all under five at the time.