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 most characteristic feature of atopic dermatitis is - and explain in detail?
Ans. is 'a' i.e., Extreme pruritus "Itching is severe and primary in atopic eczema, provoking a severe urge to scratch; atopic eczema is one of the most itchy disorders. It is an itch that rashes not just a rash that itches". -Venkatram