PTSD is a mental health condition that develops after experiencing or witnessing a traumatic event. It is characterized by intense and distressing memories of the event that interfere with daily life. Common symptoms include intrusive thoughts, nightmares, avoidance of trauma reminders, and increased anxiety. PTSD affects millions of people worldwide. While symptoms vary, confirming a PTSD diagnosis involves a clinical interview and assessing how symptoms impact functioning. Effective treatments are available to help manage symptoms.