Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy

Background: Diagnosing and differentiating pityriasis rubra pilaris (PRP) from other disorders can be a challenging task. Although histopathology remains the gold standard, it may not be feasible at times, especially in children. Being noninvasive, dermoscopy can be of great diagnostic importance i...

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Autores principales:	Abhijeet Kumar Jha, Aimilios Lallas, Sidharth Sonthalia, Deepak Jakhar, Uday K. Udayan, R. K. P. Chaudhary
Formato:	article
Lenguaje:	EN
Publicado:	Mattioli1885 2018
Materias:	pityriasis rubra pilaris plaque psoriasis lichen spinulosis lichen nitidus dermoscopy Dermatology RL1-803
Acceso en línea:	https://doaj.org/article/a05a977405ff4a648c1623a0fd02c0f8
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spelling	oai:doaj.org-article:a05a977405ff4a648c1623a0fd02c0f82021-11-17T08:29:58ZDifferentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy10.5826/dpc.0804a102160-9381https://doaj.org/article/a05a977405ff4a648c1623a0fd02c0f82018-10-01T00:00:00Zhttp://dpcj.org/index.php/dpc/article/view/479https://doaj.org/toc/2160-9381 Background: Diagnosing and differentiating pityriasis rubra pilaris (PRP) from other disorders can be a challenging task. Although histopathology remains the gold standard, it may not be feasible at times, especially in children. Being noninvasive, dermoscopy can be of great diagnostic importance in such a scenario. Dermoscopy overcomes the refractive properties of stratum corneum by interface medium or cross-polarization enabling easier visualization of lesions. Objective: To study the dermoscopic features of PRP and compare them with dermoscopic features of psoriasis. Patients and Methods: Retrospective observational analysis of dermoscopic characteristics of 28 patients with PRP (16) and psoriasis (12). Polarized dermoscopy at 10× magnification was performed and photographs were captured by Apple iPhone 7. The selection of dermoscopic variables was based on preexisting literature on the dermoscopic patterns of the 2 entities. Results: The most frequent dermoscopic criteria of PRP were the presence of a central hair (16/16; 100%), follicular plugs (11/16; 68.7%), and perifollicular yellow/orange halos (9/16; 56.2%). No vascular structures were seen in our cases of PRP. Psoriasis was characterized by regularly distributed dotted vessels (12/12; 100%) and white scales (8/12; 66.6%). Conclusions: Round-to-oval yellowish areas surrounding a central hair with or without follicular plugs represents the most frequent dermoscopic pattern of PRP. Abhijeet Kumar JhaAimilios LallasSidharth SonthaliaDeepak JakharUday K. UdayanR. K. P. ChaudharyMattioli1885articlepityriasis rubra pilarisplaque psoriasislichen spinulosislichen nitidusdermoscopyDermatologyRL1-803ENDermatology Practical & Conceptual, Vol 8, Iss 4 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	pityriasis rubra pilaris plaque psoriasis lichen spinulosis lichen nitidus dermoscopy Dermatology RL1-803
spellingShingle	pityriasis rubra pilaris plaque psoriasis lichen spinulosis lichen nitidus dermoscopy Dermatology RL1-803 Abhijeet Kumar Jha Aimilios Lallas Sidharth Sonthalia Deepak Jakhar Uday K. Udayan R. K. P. Chaudhary Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
description	Background: Diagnosing and differentiating pityriasis rubra pilaris (PRP) from other disorders can be a challenging task. Although histopathology remains the gold standard, it may not be feasible at times, especially in children. Being noninvasive, dermoscopy can be of great diagnostic importance in such a scenario. Dermoscopy overcomes the refractive properties of stratum corneum by interface medium or cross-polarization enabling easier visualization of lesions. Objective: To study the dermoscopic features of PRP and compare them with dermoscopic features of psoriasis. Patients and Methods: Retrospective observational analysis of dermoscopic characteristics of 28 patients with PRP (16) and psoriasis (12). Polarized dermoscopy at 10× magnification was performed and photographs were captured by Apple iPhone 7. The selection of dermoscopic variables was based on preexisting literature on the dermoscopic patterns of the 2 entities. Results: The most frequent dermoscopic criteria of PRP were the presence of a central hair (16/16; 100%), follicular plugs (11/16; 68.7%), and perifollicular yellow/orange halos (9/16; 56.2%). No vascular structures were seen in our cases of PRP. Psoriasis was characterized by regularly distributed dotted vessels (12/12; 100%) and white scales (8/12; 66.6%). Conclusions: Round-to-oval yellowish areas surrounding a central hair with or without follicular plugs represents the most frequent dermoscopic pattern of PRP.
format	article
author	Abhijeet Kumar Jha Aimilios Lallas Sidharth Sonthalia Deepak Jakhar Uday K. Udayan R. K. P. Chaudhary
author_facet	Abhijeet Kumar Jha Aimilios Lallas Sidharth Sonthalia Deepak Jakhar Uday K. Udayan R. K. P. Chaudhary
author_sort	Abhijeet Kumar Jha
title	Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
title_short	Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
title_full	Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
title_fullStr	Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
title_full_unstemmed	Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
title_sort	differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy
publisher	Mattioli1885
publishDate	2018
url	https://doaj.org/article/a05a977405ff4a648c1623a0fd02c0f8
work_keys_str_mv	AT abhijeetkumarjha differentiationofpityriasisrubrapilarisfromplaquepsoriasisbydermoscopy AT aimilioslallas differentiationofpityriasisrubrapilarisfromplaquepsoriasisbydermoscopy AT sidharthsonthalia differentiationofpityriasisrubrapilarisfromplaquepsoriasisbydermoscopy AT deepakjakhar differentiationofpityriasisrubrapilarisfromplaquepsoriasisbydermoscopy AT udaykudayan differentiationofpityriasisrubrapilarisfromplaquepsoriasisbydermoscopy AT rkpchaudhary differentiationofpityriasisrubrapilarisfromplaquepsoriasisbydermoscopy
_version_	1718425754851606528

Differentiation of pityriasis rubra pilaris from plaque psoriasis by dermoscopy

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