Aggravating factors for melasma: a prospective study in 197 Tunisian patients.

Background: Melasma is a frequent cause of consultations at dermatology departments by dark-skinned patients in Tunisia.

Objective: To investigate factors that influence melasma severity in a large Tunisian population.

Methods: A total of 197 patients (188 women and 9 men), who attended Tunis Military Hospital for a consultation were included prospectively from August 2005 to August 2006.

Artificial and natural ultraviolet radiation exposure: beliefs and behaviour of 7200 French adults.

Background: Despite the increasing use of indoor tanning facilities, little is known regarding the behaviour of adults with respect to artificial and natural ultraviolet (UV) radiation exposure and the relationship between the two forms of exposure.

Objectives: To describe the beliefs and behaviour of French middle-aged volunteers regarding artificial and natural UV exposure.

Methods: Cross-sectional study of a French national cohort using a self-completed questionnaire.