Psychological trauma (mental trauma, psychotrauma, or psychiatric trauma) is an emotional response caused by severe distressing events such as accidents, violence, sexual assault, terror, or sensory overload.
Short-term reactions such as psychological shock and psychological denial are typically followed. Long-term reactions and effects include bipolar disorder, uncontrollable flashbacks, panic attacks, insomnia, nightmare disorder, difficulties with interpersonal relationships, and post-traumatic stress disorder (PTSD). Physical symptoms including migraines, hyperventilation, hyperhidrosis, and nausea are often developed.
As subjective experiences differ between individuals, people react to similar events differently. Not everyone who experiences a potentially traumatic event becomes psychologically traumatized, though they may be distressed and experience suffering. Some will develop PTSD after exposure to a traumatic event, or series of events. This discrepancy in risk rate can be attributed to protective factors some individuals have, that enable them to cope with difficult events, including temperamental and environmental factors, such as resilience and willingness to seek help.
Psychotraumatology is the study of psychological trauma.
People who experience trauma often have problems and difficulties afterwards. The severity of these symptoms depends on the person, the types of trauma involved, and the support and treatment they receive from others. The range of reactions to trauma can be wide and varied, and differ in severity from person to person.
After a traumatic experience, a person may re-experience the trauma mentally and physically. For example, the sound of a motorcycle engine may cause intrusive thoughts or a sense of re-experiencing a traumatic experience that involved a similar sound e.g. gunfire. Sometimes a benign stimulus (e.g. noise from a motorcycle) may get connected in the mind with the traumatic experience. This process is called traumatic coupling.