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Latest Edit: Iva 2012-08-03 (EDT)

A bulla is a primary skin lesion that is raised and formed of free fluid. The lesions are greater than 0.5cm in diameter, if smaller they are considered vesicles.[1]

Common condtions associated with bulla include:

Check out other primary skin lesions


  1. Habif Thomas P., et al. (2005) Skin Disease, Diagnosis and Treatment Mosby