Patch Testing in the Tropics

  • Chee Leok GohEmail author


The tropical climate is hot and humid throughout the year. The ambient temperature is usually >25 °C and humidity >70 % throughout the year. There is very little seasonal variation. Patch testing in the tropics becomes a challenge to dermatologists because the application of occlusive patch test allergens with sticky tapes can cause discomfort to the patient, and adhesive tapes used for holding the test chambers in place often get displaced because of sweating. In this chapter, pitfalls and tips on patch testing in the tropics are presented.


Contact Dermatitis Patch Test Allergic Contact Dermatitis High Ambient Temperature Gentian Violet 
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  1. 1.
    Ale SI, Maibach HI. 24-hour versus 48-hour occlusion in patch testing. Exog Dermatol. 2003;2:270–6.CrossRefGoogle Scholar
  2. 2.
    Goh CL, Kwok SF. The influence of temperature on the concentration homogeneity of patch test materials. Contact Dermatitis. 1986;15:231–4.PubMedCrossRefGoogle Scholar
  3. 3.
    Ng SK. Topical traditional Chinese medicine. A report from Singapore. Arch Dermatol. 1998;134(11):1395–6.PubMedCrossRefGoogle Scholar
  4. 4.
    Lim KS, Tang MB, Goon AT, Leow YH. The role of topical traditional Chinese medicaments as contact sensitisers in chronic venous leg ulcer patients. Ann Acad Med Singapore. 2007;36(11):942–6.PubMedGoogle Scholar
  5. 5.
    Lee TY, Lam TH. Mastix is another allergen causing bone-setter’s herbs dermatitis. Contact Dermatitis. 2001;44(5):312–3.PubMedCrossRefGoogle Scholar
  6. 6.
    Lee TY, Lam TH. Allergic contact dermatitis due to a Chinese orthopaedic solution tieh ta yao gin. Contact Dermatitis. 1993;28(2):89–90.PubMedCrossRefGoogle Scholar
  7. 7.
    Goh CL. Occupational contact dermatitis from Rengas wood. Contact Dermatitis. 1988;18(5):300.PubMedCrossRefGoogle Scholar
  8. 8.
    Podjasek JO, Cook-Norris RH, Richardson DM, Drage LA, Davis MD. Allergic contact dermatitis from exotic woods: importance of patch-testing with patient-provided samples. Dermatitis. 2011;22(2):E1–6.PubMedGoogle Scholar
  9. 9.
    Lilly E, Kundu RV. Dermatoses secondary to Asian cultural practices. Int J Dermatol. 2012;51(4):372–9.PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.National Skin CentreSingaporeSingapore

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