Post-Traumatic Stress Disorder (PTSD) is a mental health condition that develops after experiencing or witnessing a traumatic event, such as combat, assault, natural disasters, or serious accidents. Symptoms fall into four main categories: intrusive memories (flashbacks, nightmares), avoidance (steering clear of trauma reminders), negative changes in mood and thinking (emotional numbness, difficulty experiencing positive emotions), and hyperarousal (exaggerated startle response, irritability, sleep disturbances). PTSD can significantly impact relationships, work, and daily functioning. Treatment options include therapy (such as Cognitive Behavioral Therapy and EMDR) and medication to manage symptoms.