E-ISSN 2231-170X | ISSN 2231-1696
 

Original Article 


Diagnosis of Pityriasis rosea using a triple light source dermoscope

Manmohan Gavvala, Madhulika Gavvala.

Abstract
Dermoscopy allows non-invasive observation of the surface and sub-surface features of pathological skin conditions and reveals characteristic novel patterns that are diagnostic. The aim of the present study was to assess the dermoscopic features in Pityriasis rosea (P. rosea / PR) and relate the dermoscopic diagnosis with the clinico-histopathological diagnosis. This is a prospective, observational study conducted over a period of 18 months in 15 patients who presented with Pityriasis rosea skin lesions to our outpatient clinic and satisfied the relevant inclusion and exclusion criteria. The lesions were analyzed clinically and subjected to dermoscopy and histopathology and the resulting diagnoses were compared. On dermoscopy, white collarette scaling was seen in 100% of the cases. Vascular findings like red dots in a patchy distribution were noted in 13 (86.66%) cases. The background color was yellow (66.66%), dull red (20%) or light red (13.33%). Of the 15 cases which were diagnosed clinico-dermoscopically as PR, biopsy was done in 13 cases, of which 11 cases showed features favorable of PR and 2 cases could not be differentiated from dermatitis. Overall, there was a positive correlation between the clinical, dermoscopic and histopathological diagnoses in 11 of the 15 patients (73.33%).Based on the observations noted in the present study, it may be concluded that dermoscopy is a useful, non-invasive tool in making a definitive diagnosis of pityriasis rosea.

Key words: Collarette, Dermoscopy, Pityriasis rosea, Scales, Vascular


 
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How to Cite this Article
Pubmed Style

Gavvala M, Gavvala M. Diagnosis of Pityriasis rosea using a triple light source dermoscope. J Med Allied Sci. 2021; 11(1): 51-55. doi:10.5455/jmas.125665


Web Style

Gavvala M, Gavvala M. Diagnosis of Pityriasis rosea using a triple light source dermoscope. https://jmas.in/?mno=125665 [Access: December 05, 2023]. doi:10.5455/jmas.125665


AMA (American Medical Association) Style

Gavvala M, Gavvala M. Diagnosis of Pityriasis rosea using a triple light source dermoscope. J Med Allied Sci. 2021; 11(1): 51-55. doi:10.5455/jmas.125665



Vancouver/ICMJE Style

Gavvala M, Gavvala M. Diagnosis of Pityriasis rosea using a triple light source dermoscope. J Med Allied Sci. (2021), [cited December 05, 2023]; 11(1): 51-55. doi:10.5455/jmas.125665



Harvard Style

Gavvala, M. & Gavvala, . M. (2021) Diagnosis of Pityriasis rosea using a triple light source dermoscope. J Med Allied Sci, 11 (1), 51-55. doi:10.5455/jmas.125665



Turabian Style

Gavvala, Manmohan, and Madhulika Gavvala. 2021. Diagnosis of Pityriasis rosea using a triple light source dermoscope. Journal of Medical and Allied Sciences, 11 (1), 51-55. doi:10.5455/jmas.125665



Chicago Style

Gavvala, Manmohan, and Madhulika Gavvala. "Diagnosis of Pityriasis rosea using a triple light source dermoscope." Journal of Medical and Allied Sciences 11 (2021), 51-55. doi:10.5455/jmas.125665



MLA (The Modern Language Association) Style

Gavvala, Manmohan, and Madhulika Gavvala. "Diagnosis of Pityriasis rosea using a triple light source dermoscope." Journal of Medical and Allied Sciences 11.1 (2021), 51-55. Print. doi:10.5455/jmas.125665



APA (American Psychological Association) Style

Gavvala, M. & Gavvala, . M. (2021) Diagnosis of Pityriasis rosea using a triple light source dermoscope. Journal of Medical and Allied Sciences, 11 (1), 51-55. doi:10.5455/jmas.125665