Usually, the doctor would ask the patient to describe the symptoms he/she experiences. This is one of the first steps doctors do during diagnosis. The patient describes the color changes which happen after exposure to cold. To see the actual effect, the doctor may immerse the patients hand in ice water. However, this test doesn't always work. Doctors may also perform some blood tests on the patient. They use the results from the tests in their diagnosis. Through the tests, they can discount the presence of the auto-antibodies. These are typically associated with the disease.

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