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Many methods have been tried to monitor scratch movement clinically. We deviced a new, simple and easy instrument (scratch monitor) measuring the scratching movement during night. This was used as an indication for itch. Scratch monitor is 4.5cm long, 4.0cm wide and 1.5cm high, and weighs 25g. It is attached on the back of the hands before sleep. The data are analyzed by a personal computer.By...
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