Computer-assisted alignment and tracking of acne lesions indicate that most inflammatory lesions arise from comedones and de novo - 24/04/13
Abstract |
Background |
Inflammatory acne lesions are believed to derive from comedones; however, their evolution has not been rigorously studied.
Objective |
To examine the evolution of facial acne lesions using serial digital photographs and spatial alignment software.
Methods |
Six predefined lesion types, including inflammatory lesions, were counted and tracked from photographs taken every 2 weeks for 12 weeks from 25 individuals with untreated facial acne.
Results |
Closed comedones occurred most frequently (37%), followed by erythematous macules (26%), inflammatory papules (15%), open comedones (12%), pustules (2%), and nodules (1%). Inflammatory lesions were preceded by comedones (54%), normal-appearing skin (28%), erythematous macules (12%), and scars (6%).
Limitations |
Lesions could have appeared and resolved within the 2-week intervals and some comedones may have been too small to identify on digital photographs.
Conclusion |
Our results confirm the comedonal origin of the majority of inflammatory acne lesions. However, a sizeable number (28%) appear to arise from normal skin.
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Funding sources: None. |
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Conflicts of interest: None declared. |
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Some of the data from this manuscript were presented at the annual meeting of the Society of Investigative Dermatology, Los Angeles, California, May 9-13, 2007. |
Vol 58 - N° 4
P. 603-608 - avril 2008 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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