Tests and diagnosisBy Mayo Clinic staff
The diagnosis of frostbite is usually apparent based on your signs and symptoms, appearance of your skin, and recent exposure to cold.
Your doctor may conduct tests, such as an X-ray, bone scan or magnetic resonance imaging (MRI) test, to determine the severity of the frostbite and to check if bone or muscle is damaged. Your doctor may also run tests if he or she suspects you have hypothermia, a condition that often occurs with frostbite.
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