system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A most characteristic feature of atopic dermatitis is -
assistant
The correct answer is  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