The first reported case of an immediate hypersensitivity reaction to latex was described by Nutter in 1979 (52), although this allergy had certainly occurred before that date. During the past 5 years, allergic reactions to products made of natural rubber latex have been reported with increasing frequency, especially in health care personnel and their patients. This phenomenon has been attributed to the recent dramatic rise in the use of latex gloves by medical, dental and auxiliary personnel for protection against the AIDS and hepatitis viruses, although not all authors agree (74), and it might not explain the apparently increased incidence in children with spina bifida and in the general population. It is likely that the increased incidence of allergy to latex among hospital personnel and their patients is related to changes in the manufacturing of gloves and/or to the change from reusable, steam-sterilized to single-use gloves that followed the increased demand for these products. In addition it might be related to better recognition of the clinical problem by the medical community.In this review, we will consider, successively, the epidemiology of allergy to latex including its prevalence and the risk factors for its development, its clinical manifestations, the nature of latex allergens, immunologic mechanisms of latex allergy, diagnostic methods, and the prevention of allergic reactions to products made of natural rubber latex.