Scalp involvement in patients referred for patch testing: Retrospective cross-sectional analysis of North American Contact Dermatitis Group data, 1996 to 2016 - 10/03/21
, Joel G. DeKoven, MD e, Howard I. Maibach, MD f, Donald V. Belsito, MD g, Jonathan I. Silverberg, MD h, Joseph F. Fowler, MD i, Amber R. Atwater, MD j, Denis Sasseville, MD k, Margo J. Reeder, MD l, James S. Taylor, MD m, Vincent A. DeLeo, MD n, Melanie D. Pratt, MD o, Kathryn A. Zug, MD p, Anthony F. Fransway, MD qAbstract |
Background |
Scalp conditions are often multifactorial.
Objective |
To characterize patients with scalp involvement and patch-testing outcomes.
Methods |
Retrospective cross-sectional analysis of North American Contact Dermatitis Group data (1996-2016). Study groups included patients with scalp involvement (≤3 anatomic sites coded) with or without additional sites.
Results |
A total of 4.8% of patients (2331/48,753) had scalp identified as 1 of up to 3 affected anatomic sites. Approximately one-third of “scalp-only” individuals had a specific primary diagnosis of allergic contact dermatitis (38.6%), followed by seborrheic dermatitis (17.2%) and irritant contact dermatitis (9.3%). When adjacent anatomic sites were affected, allergic contact dermatitis was more frequently identified as the primary diagnosis (>50%). The top 5 currently clinically relevant allergens in scalp-only patients were p-phenylenediamine, fragrance mix I, nickel sulfate, balsam of Peru, and cinnamic aldehyde. Methylisothiazolinone sensitivity was notable when adjacent anatomic sites were involved. The top 3 specifically identified sources for scalp-only allergens were hair dyes, shampoo/conditioners, and consumer items (eg, hair appliances, glasses).
Limitations |
Tertiary referral population.
Conclusion |
Isolated scalp involvement was less likely to be associated with allergic contact dermatitis than when adjacent anatomic sites were involved. Overlap with multiple diagnoses was frequent, including seborrheic dermatitis, irritant dermatitis, other dermatoses, or all 3. p-Phenylenediamine was the most common allergen.
Le texte complet de cet article est disponible en PDF.Key words : allergic contact dermatitis, dermatitis, irritant contact dermatitis, itch, North American Contact Dermatitis Group, patch testing, p-phenylenediamine, pruritus, scalp, seborrheic dermatitis
Plan
| Funding sources: None. |
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| Conflicts of interest: None disclosed. |
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| IRB approval status: Approved by Minneapolis Veterans Administration Medical Center's Subcommittee on Human Studies. |
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| This work was supported by the use of facilities and resources of the Minneapolis Veterans Affairs Medical Center. The contents do not represent the views of the US Department of Veterans Affairs or the US government. |
Vol 84 - N° 4
P. 977-988 - avril 2021 Retour au numéro
Article précédent
- Contact dermatitis associated with preservatives: Retrospective analysis of North American Contact Dermatitis Group data, 1994 through 2016
- Amber Reck Atwater, Amy J. Petty, Beiyu Liu, Cynthia L. Green, Jonathan I. Silverberg, Joel G. DeKoven, Donald V. Belsito, Margo J. Reeder, Denis Sasseville, James S. Taylor, Howard I. Maibach, Matthew J. Zirwas, James G. Marks, Kathryn A. Zug, Joseph F. Fowler, Melanie D. Pratt, Vincent A. DeLeo, Erin M. Warshaw
- Hand dermatitis in adults referred for patch testing: Analysis of North American Contact Dermatitis Group Data, 2000 to 2016
- Jonathan I. Silverberg, Erin M. Warshaw, Amber R. Atwater, Howard I. Maibach, Kathryn A. Zug, Margo J. Reeder, Denis Sasseville, James S. Taylor, Joseph F. Fowler, Melanie D. Pratt, Anthony F. Fransway, Matthew J. Zirwas, Donald V. Belsito, James G. Marks, Vincent A. DeLeo, Joel G. DeKoven
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