Some IBD medications, such as immunosuppressants, can make your skin more sensitive to sun damage.
Stay in the shade and wear covered clothing when possible. Always protect yourself with a water-resistant, cream-based sunscreen with SPF 30 or higher, with UVA and UVB protection (broad spectrum). Apply sunscreen liberally 15-30 minutes before going outdoors, and reapply every two hours or after swimming.
When you need both insect repellent and sunscreen, apply the sunscreen first to ensure its effectiveness.