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I have a question with regards to the monthly search ranges. I read your information on how the range is calculated but it does not explain the following. Google AU comparison for "hives" and "urticaria". The range give is 11.5-30.3K per month for both terms. This is highly unusual because we know that people use hives more than urticaria when searching for the same disease. Interesting this is the only medical term that behaves like this and want to understand the reason why.