The recommended frequency of skin cancer checks depends on several risk factors including your age, genetic predisposition, skin type, and history of sun exposure. Generally, an annual check-up is advisable for most people. However, if you are at a higher risk—due to factors like a history of sunburns or a family history of skin cancer—your doctor may suggest more frequent screenings.

When performing self-exams, watch for new growths or changes in existing moles and skin marks. Key warning signs include asymmetry (one half of the mole doesn't match the other), irregular borders (ragged, notched, or blurred edges), varied colours within a single growth, and size greater than 6mm (about the size of a pencil eraser). Also, take note of any evolution in size, shape, colour, or elevation, or any new symptom such as bleeding, itching, or crusting. These signs can sometimes indicate skin cancer and are your cue to consult with your doctor. For more detailed information about self skin checks, visit the Cancer Council website.

Mobile apps can assist in tracking changes in your skin by storing photographs and helping you compare them over time. They provide a useful way to create a visual history of your skin, which can be helpful during consultations with your doctor. However, it's important to remember that these apps should not replace regular skin checks by a trained professional.

A skin check involves a thorough examination of all areas of your skin, using a dermatoscope (a specialised tool that illuminates and magnifies skin lesions). Your doctor will look for any suspicious changes or growths that might require further investigation. They may document these findings with photographs, which can be used to monitor changes over subsequent visits. If any suspicious lesions are found, your doctor might perform a biopsy, which involves taking a small sample of the skin for laboratory analysis.

Sun protection is crucial in preventing skin cancer. Wear sun-protective clothing, including a broad-brimmed hat and UV-protective sunglasses, and apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, or more often if swimming or sweating. Stay in the shade whenever you can outdoors, especially between 10am and 4pm when UV rays are typically the strongest. For more information on sun protection, visit the Cancer Council website.