An emotional response to an unexpected event, often triggered some time after the initial unexpected event. For example, some women affected by breast cancer will feel trauma after completing treatment because they hear or see something that reminds them of the diagnosis or treatment.

Trauma is an event or series of events that fundamentally alter the individual's sense of who they are.

An event which causes mental and/or physical harm.

severe emotional and sometimes physical experiences which leave an impact, such as witnessing violence for example.

an extreme event - the kind of event people do not expect to experience in their lives

a unique problem consisting of perfectly normal, appropriate emotionally disturbed reaction to a situation or event

A psychologically distressing event that is outside the range of usual human experience, often involving a sense of intense fear, terror and helplessness.

An emotionally-charged event that is sufficiently harmful as to activate not only conscious adaptive reactions, but also unconscious perceptions and adaptive responses. By and large, the emotion-processing mind has evolved to deal with traumas, psychological and/or physical.

A moment in time, or string of moments where the sensations, emotions, and thoughts are stored. Causes difficulties for humans as they guide behavior inappropriately. Usually painful or difficult experiences. Trauma creates post traumatic stress disorder.

The psychiatric definition of "trauma" is "an event outside normal human experience." It is a sudden and potentially life threatening event. See Post Traumatic Stress Disorder.

Trauma is a 2004 psychological thriller directed by Marc Evans and written by Richard Smith.

Trauma is a 1993 film directed by Dario Argento who also co-wrote the screenplay. The film can be described as a giallo, that is a film with influences from the horror, mystery, and thriller genres.