What should be considered prior to the workup for atopic dermatitis (eczema)?

Updated: Mar 13, 2019
  • Author: Brian S Kim, MD, MTR, FAAD; Chief Editor: William D James, MD  more...
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Answer

Additional considerations in the diagnosis of AD are as follows:

  • No reliable biomarker exists for the diagnosis of AD

  • Laboratory testing is seldom necessary but a complete blood cell count can be useful to exclude immune deficiency; an IgE level can be helpful to confirm an atopic pattern; a swab of skin can be helpful to identify S aureus superinfection

  • Allergy and radioallergosorbent testing is of little value

  • Biopsy shows an acute, subacute, or chronic spongiotic dermatitis pattern that is nonspecific but can be helpful to rule out other conditions (eg, cutaneous T-cell lymphoma)

See Workup for more detail.


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