You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A victim of Tsunami has difficulty in overcoming the experience. She still recollects the happening in dreams and thoughts. The most likely diagnosis is and explain in detail?
PTSD is characterised by recurrent and intrusive recollections of the stressful event, either in flashbacks (images, thoughts, or perceptions) and/or in dreams. There is an associated sense of re-experiencing of the stressful event. There is marked avoidance of the events or situations that arouse recollections of the stressful event, along with marked symptoms of anxiety and increased arousal. The other impoant clinical features of PTSD include paial amnesia for some aspects of the stressful event, feeling of numbness, and anhedonia (inability to experience pleasure). Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 112