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Diagnosis is primarily based on the appearance of the skin and on personal and family history. The health care provider should examine the lesions to rule out other possible causes.
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No laboratory test can reliably diagnose AD, although some patients will be reactive to tests designed to diagnose allergy. These would include skin tests by intradermal injection, scratch, or patch tests.
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During a physical examination, a health care provider studies a patient''s body to determine the presence or absence of physical problems.
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