Case scenario

Thomas, 22, presents to your pharmacy with a prescription for doxycycline for a bacterial infection. They have fair skin, work as a builder and are a keen surfer. You discuss with them the risk of sunburn with doxycycline, but they say they do not want to use sunscreen every day because they heard it would lower their vitamin D levels.

Learning objectives

After reading this article, pharmacists should be able to:

  • Explain the different types of UV radiation and their impact on the skin
  • Discuss the different components and features of sunscreens
  • Discuss factors that increase a person’s risk of skin cancer
  • Explain changes to skin that prompt referral to a skin specialist.

Competency standards (2016) addressed: 1.1, 1.4, 1.5, 2.2, 3.1, 3.5

Accreditation number: CAP2510SYPVS

Accreditation expiry: 31/09/2028

Already read the CPD in the journal? Scroll to the bottom to SUBMIT ANSWERS.

Introduction

The sun produces ultraviolet (UV) radiation, which spans a section of the electromagnetic spectrum defined as 100–400 nm in wavelength, with subdivisions into UVA (320–400 nm), UVB (290–320 nm) and UVC (100–290 nm).1 While there are many sources of UV radiation, the major source for human exposure is the sun.2

UVB radiation is needed for the body to convert vitamin D to its active form.3 However, it can damage DNA, leading to photo-aging of the skin, eye issues such as cortical cataracts and skin cancers.4–6

Australia has the highes

THIS IS A CPD ARTICLE. YOU NEED TO BE A PSA MEMBER AND LOGGED IN TO READ MORE.