Crisis communication is a sub-specialty of the public relations profession that is designed to protect and defend an individual, company, or organization facing a public challenge to its reputation. Crisis communication is aimed at raising awareness of a specific type of threat, the magnitude, outcomes, and specific behaviors to adopt to reduce the threat. The communication scholar Timothy Coombs defines crisis as "the perception of an unpredictable event that threatens important expectancies of stakeholders and can seriously impact an organization's performance and generate negative outcomes" and crisis communication as "the collection, processing, and dissemination of information required to address a crisis situation."

Meaning can be socially constructed; because of this, the way that the stakeholders of an organization perceive an event (positively, neutrally, or negatively) is a major contributing factor to whether the event will become a crisis. Additionally, it is important to separate a true crisis situation from an incident. The term crisis “should be reserved for serious events that require careful attention from management.”

Crisis management has been defined as "a set of factors designed to combat crises and to lessen the actual damages inflicted." Crisis management should not merely be reactionary; it should also consist of preventative measures and preparation in anticipation of potential crises. Effective crisis management has the potential to greatly reduce the amount of damage the organization receives as a result of the crisis, and may even prevent an incident from ever developing into a crisis.

In crisis communication literature, several streams of research exist at the same time. Different theories demonstrate certain ways to look at and explain crisis situations.

"It is, as one would assume, an effort to defend and protect image. But it is not necessarily an apology." This theory would be used by an organization to deny public discourse and address a crisis.

William Benoit established image repair theory (IRT) based on apologia studies. IRT assumes that image is an asset that a person or an organization attempts to protect during a crisis. When the person or the organization is attacked, the accused should draft messages to repair its image. Benoit further introduced 5 general and 14 specific response strategies the accused could harness during a crisis. General categories include deny, evading responsibility, reducing offensiveness, corrective action, and mortification.

Timothy Coombs started working on situational crisis communication theory (SCCT) in 1995. Originated from attribution theory, SCCT assumes that crises are negative events that stakeholders attempt to attribute responsibility. Coombs believes crisis managers can employ different crisis strategies according to different crisis types. Different from IRT, SCCT is an audience-oriented theory which focuses on stakeholders’ perceptions of crisis situations. This idea is in line with Benoit's argument that crisis management concerns perception more so than reality.

As social networks and blogs become popular, people spend more time online during crises. Social-mediated crisis communication (SMCC) model is introduced to investigate crisis management in online context. The model first explains how the source and form of information affect response selections and then proposes crisis response strategies. The model argues that five factors influence an organizations’ communication during a crisis: crisis origin, crisis type, infrastructure, message strategy, and message form.