Introduction: Solar radiation is classified as a known human carcinogen. In France, people frequently ask local pharmacies to dispense products for sunburns. In the PRISME project, studying this use can be a specific and sensitive way to assess these overexposures. Objective: This study aims to construct an indicator for monitoring healthcare consumption in pharmacies after overexposure to solar UV. Methods: The study, conducted between July and August 2019, covered a sample of pharmacies located in coastal communities of southern France. A list of products for sunburn was defined. When one of the products on this list was sold, the customer was asked to fill out a questionnaire to determine whether the purchase was related to UV overexposure. A positive predictive value (PPV) per active ingredient was calculated. Results: Overall, nine pharmacies participated in the study, and 288 questionnaires were collected. The majority of products purchased were for women (60.7%), for people aged 15 and over (78.1%), and for people not living in the department (68.9%). The most frequently purchased products were our trolamine-containing products which accounted for 53% of sales. With the exception of three products, all PPVs were greater than 0.8. Conclusion: The high PPV confirms the suitability of the product selection as an indicator for monitoring healthcare consumption related to solar UV overexposure. Two indicators (one sensitive and one specific) were selected to maximise the chances of identifying UV-related remedies.

UV radiation causes health effects and repeated excessive sun exposure during childhood increases the risk of skin cancer in adulthood. The French region of Occitanie combines conditions conducive to sun exposure with a wide range of healthcare services. The study aims to describe temporal variations related to sun overexposure and patient characteristics, and evaluate the relevance of each data source. We conducted a retrospective analysis (2019–2022) on pharmacy sales, emergency care provided by SOS Médecins (SOSM), and emergency departments (EDs). More than 220,000 customers purchased products associated with sun overexposure, while 71 SOSM procedures and 417 ED visits were recorded. The activity is clearly seasonal, but remains five to ten times higher for pharmacies than for other sources. About 80% of ED patients were under 40 years of age, while 50% lived within 20 km of the consultation location. The impacts on healthcare systems vary, and each provides complementary insights into care related to sun overexposure. Increases in pharmacy sales are observed as early as spring, underscoring the need to strengthen prevention messaging from the start of the season. The study confirms the value of pharmacy sales data for assessing the impact of sun exposure, but ED or SOSM data enable real-time monitoring and patient characterization.