Diagnosis of Cold Sores (Herpes Simplex Type 1)
by Editorial Staff And Contributors
Cold sores have very recognizable features. They are most often diagnosed by physical exam and by your medical history. If your doctor is not sure, a sample of the fluid or tissue from the blister may be taken. A blood sample may also be taken for testing.
Testing may include any of the following:
Cold sores. Nemours Kids Health website. Available at:
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Accessed January 29, 2021.
Herpes simplex. American Academy of Dermatology website. Available at: https://www.aad.org/public/diseases/contagious-skin-diseases/herpes-simplex. Accessed January 29, 2021.
Oral herpes. EBSCO DynaMed website. Available at: http://www.dynamed.com/topics/dmp~AN~T115104/Oral-herpes . Accessed January 29, 2021.
Last reviewed March 2020 by EBSCO Medical Review Board David L. Horn, MD, FACP
Last Updated: 1/29/2021