Molluscum contagiosum classification

Molluscum contagiosum Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mahshid Mir, M.D. [2]

Overview

Molluscum contagiosum may be classified according to restriction endonuclease analysis into 4 different subtypes. Type 1 is the most commonly seen subtype.

Classification

• Molluscum contagiosum may be classified according to restriction endonuclease analysis into 4 different subtypes. There are 4 types of MCV, MCV-1 to -4, with MCV-1 being the most prevalent and MCV-2 seen usually in adults and often sexually transmitted. There is not enough evidence about correlation of molluscum contagiosum subtypes and the disease features or anatomical distribution of lesions.

• Molluscum contagiosum also can be categorized based on it's lesions to:
  • Molluscum dermatitis: Eczematous patches or plaques surrounding molluscum contagiosum lesions.
  • Inflamed molluscum contagiosum: Erythema and swelling of individual lesions, is a clinical finding that may portend a higher likelihood of impending clinical improvement.