What causes Post-traumatic stress disorder (PTSD)?

PTSD is diagnosed after a person experiences symptoms for at least one month following a traumatic event. However symptoms may not appear until several months or even years later. read more

Post-traumatic stress disorder (PTSD) is a mental health condition that's triggered by a terrifying event — either experiencing it or witnessing it. Symptoms may include flashbacks, nightmares and severe anxiety, as well as uncontrollable thoughts about the event. read more

Studies have shown that people with PTSD have abnormal levels of stress hormones. Normally, when in danger, the body produces stress hormones such as adrenaline to trigger a reaction in the body. This reaction, often known as the "fight or flight" reaction, helps to deaden the senses and dull pain. read more

Explanations of the causes of post-traumatic stress disorder (PTSD) focus primarily on the way that the mind is affected by traumatic experiences. Researchers speculate that, upon facing overwhelming trauma, the mind is unable to process information and feelings in a normal way. read more