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Dermoscopy can be useful in differentiating scalp psoriasis from seborrhoeic dermatitis.
Br J Dermatol. 2011 Mar; 164(3):652-6.BJ

Abstract

BACKGROUND

Psoriasis and seborrhoeic dermatitis are common erythematous-squamous dermatoses that may present with scaly erythematous patches on the scalp. Owing to the similar clinicopathological features of these dermatoses, their differentiation poses a diagnostic challenge, particularly when the lesions on the scalp are isolated.

OBJECTIVES

To evaluate the usefulness of dermoscopy in the clinical differentiation of scalp psoriasis and seborrhoeic dermatitis.

METHODS

This was a retrospective observational study to evaluate the characteristic dermoscopic features of scalp psoriasis and seborrhoeic dermatitis. The study included a total of 96 patients with lesions; these patients were recruited from two tertiary teaching hospitals in Korea (Pusan National University Hospital and Kyungpook National University Hospital). Among these, 55 patients had scalp psoriasis and 41 patients had seborrhoeic dermatitis.

RESULTS

The most significant dermoscopic features of scalp psoriasis were red dots and globules, twisted red loops, and glomerular vessels. In contrast, seborrhoeic dermatitis was characterized by arborizing vessels and atypical red vessels with the absence of red dots and globules. Featureless areas devoid of any particular vascular patterns were also frequently observed in seborrhoeic dermatitis. Dermoscopic findings of red lines and other vascular patterns were not considered useful for differentiation because these were uncommon features in both diseases. Although scales were observed commonly in both diseases, there was no significant difference in the frequency and characteristics of the scales when they were observed using dermoscopy.

CONCLUSIONS

Our study shows that the investigation of vascular patterns by using dermoscopy can be valuable for the clinical diagnosis and differentiation of scalp psoriasis and seborrhoeic dermatitis.

Authors+Show Affiliations

Department of Dermatology, School of Medicine, Pusan National University, Ami-dong, Seo-Ku, Busan, Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21155753

Citation

Kim, G-W, et al. "Dermoscopy Can Be Useful in Differentiating Scalp Psoriasis From Seborrhoeic Dermatitis." The British Journal of Dermatology, vol. 164, no. 3, 2011, pp. 652-6.
Kim GW, Jung HJ, Ko HC, et al. Dermoscopy can be useful in differentiating scalp psoriasis from seborrhoeic dermatitis. Br J Dermatol. 2011;164(3):652-6.
Kim, G. W., Jung, H. J., Ko, H. C., Kim, M. B., Lee, W. J., Lee, S. J., Kim, D. W., & Kim, B. S. (2011). Dermoscopy can be useful in differentiating scalp psoriasis from seborrhoeic dermatitis. The British Journal of Dermatology, 164(3), 652-6. https://doi.org/10.1111/j.1365-2133.2010.10180.x
Kim GW, et al. Dermoscopy Can Be Useful in Differentiating Scalp Psoriasis From Seborrhoeic Dermatitis. Br J Dermatol. 2011;164(3):652-6. PubMed PMID: 21155753.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dermoscopy can be useful in differentiating scalp psoriasis from seborrhoeic dermatitis. AU - Kim,G-W, AU - Jung,H-J, AU - Ko,H-C, AU - Kim,M-B, AU - Lee,W-J, AU - Lee,S-J, AU - Kim,D-W, AU - Kim,B-S, Y1 - 2011/02/17/ PY - 2010/12/16/entrez PY - 2010/12/16/pubmed PY - 2011/5/18/medline SP - 652 EP - 6 JF - The British journal of dermatology JO - Br J Dermatol VL - 164 IS - 3 N2 - BACKGROUND: Psoriasis and seborrhoeic dermatitis are common erythematous-squamous dermatoses that may present with scaly erythematous patches on the scalp. Owing to the similar clinicopathological features of these dermatoses, their differentiation poses a diagnostic challenge, particularly when the lesions on the scalp are isolated. OBJECTIVES: To evaluate the usefulness of dermoscopy in the clinical differentiation of scalp psoriasis and seborrhoeic dermatitis. METHODS: This was a retrospective observational study to evaluate the characteristic dermoscopic features of scalp psoriasis and seborrhoeic dermatitis. The study included a total of 96 patients with lesions; these patients were recruited from two tertiary teaching hospitals in Korea (Pusan National University Hospital and Kyungpook National University Hospital). Among these, 55 patients had scalp psoriasis and 41 patients had seborrhoeic dermatitis. RESULTS: The most significant dermoscopic features of scalp psoriasis were red dots and globules, twisted red loops, and glomerular vessels. In contrast, seborrhoeic dermatitis was characterized by arborizing vessels and atypical red vessels with the absence of red dots and globules. Featureless areas devoid of any particular vascular patterns were also frequently observed in seborrhoeic dermatitis. Dermoscopic findings of red lines and other vascular patterns were not considered useful for differentiation because these were uncommon features in both diseases. Although scales were observed commonly in both diseases, there was no significant difference in the frequency and characteristics of the scales when they were observed using dermoscopy. CONCLUSIONS: Our study shows that the investigation of vascular patterns by using dermoscopy can be valuable for the clinical diagnosis and differentiation of scalp psoriasis and seborrhoeic dermatitis. SN - 1365-2133 UR - https://www.unboundmedicine.com/medline/citation/21155753/Dermoscopy_can_be_useful_in_differentiating_scalp_psoriasis_from_seborrhoeic_dermatitis_ L2 - https://doi.org/10.1111/j.1365-2133.2010.10180.x DB - PRIME DP - Unbound Medicine ER -