A crisis hotline is a phone number people can call to get immediate emergency telephone counseling, usually by trained volunteers. Such hotlines have existed in most major cities of the United States at least since the mid-1970s. Initially set up to help those contemplating suicide, many have expanded their mandate to deal more generally with emotional crises. Similar hotlines operate to help people in other circumstances, including rape victims, bullying victims, runaway children, human trafficking victims, and people who identify as LGBT or intersex.