The Department of Dermatology provides medical, surgical, and cosmetic treatment of skin conditions. 

Make an appointment

To schedule an appointment, ask your primary care physician to contact us.


Patch testing for allergies

You are being tested to a wide variety of materials including cosmetic ingredients, fragrances, preservatives, rubber components, metals, medicines, fabric dyes and finishes, and plant substances. You can expect some itching or burning from the patch testing procedure. You may take an antihistamine, for example, Benadryl, for this.

The schedule for the week is:

  • Monday: patch tests applied
  • Wednesday: patches removed, and 1st reading
  • Thursday/Friday: 2nd reading and interpretation of results

During the week of patch testing:

  • No shower
  • No sweating
  • No strenuous exercise
  • Reinforce loose patches with tape

If you develop a delayed, new, positive patch test reaction (red, itchy spot) the week after patch testing, please report this to us.

Learn more about allergy skin testing.

Contact us

Penn State Dermatology

200 Campus Drive
Entrance 3, Suite 100
Hershey, PA 17033
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