What does PTSD mean?
Post-traumatic stress disorder (PTSD) typically refers to a psychological condition triggered by experiencing or witnessing a severe traumatic event, with core symptoms including recurrent re-experiencing of the traumatic memory. If you have concerns, it is recommended to seek medical advice early. Detailed analysis is as follows:

PTSD, short for post-traumatic stress disorder, commonly develops after exposure to extreme events that threaten life safety, such as violent injuries or natural disasters. Symptoms usually last for more than one month and significantly interfere with daily functioning. Patients may repeatedly relive the trauma through nightmares or flashbacks, accompanied by intense fear and anxiety. They may also deliberately avoid people, situations, or places associated with the trauma to prevent triggering painful memories.
Some patients may also experience emotional numbness, loss of interest in activities they once enjoyed, or remain in a persistent state of hyperarousal—easily startled, having difficulty sleeping, or struggling to concentrate. These symptoms do not always appear immediately after the traumatic event; in some cases, they may emerge months or even years later. The severity of symptoms varies depending on individual experiences and psychological resilience.
If someone around you has experienced trauma and displays the above symptoms, encourage them to seek timely professional help from a psychologist or psychiatrist. Early intervention can effectively alleviate symptoms and prevent long-term negative impacts on mental health.