New or changing skin lesion

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3 studies · 1 recommendation

Last updated: February 25, 2026

New or changing skin lesion – Skin Cancer

See Doctor Soon3 studies

New or changing skin lesions require prompt professional evaluation to catch skin cancer early

Across 3 studies—an umbrella review of 19 systematic reviews (~2,460,600 participants), an RCT (n=199), and a non-randomized intervention (n=120)—self-detection of new or changing skin lesions consistently emerges as a critical first step in skin cancer identification, but with important limitations. Self-examination sensitivity reaches only 75–88% at the lesion level, meaning 12–25% of clinically suspicious lesions go undetected without professional follow-up. Even teledermoscopy-assisted self-exams achieved 88% diagnostic concordance with in-person examination, reinforcing the need for timely clinical evaluation of any detected changes. Educational interventions improved skin-checking behavior in high-risk populations such as construction workers, where occupational UV exposure elevates skin cancer incidence. Any new, changing, or unusual skin lesion warrants professional assessment within weeks rather than months to ensure early-stage detection.

Evidence

Umbrella Review:Self-examination programmes to detect cancer, what’s the evidence?

Authors: Cassie, Heather, Clarkson, Janet, Conway, David I., Glenny, Anne-Marie, McGoldrick, Niall, Shambhunath, Shambhunath, Walsh, Tanya, Wijesiri, Thushani, Young, Linda

Published: March 1, 2024

In this umbrella review of 19 systematic reviews (199 primary studies, approximately 2,460,600 participants), three reviews focused on skin cancer and two on both skin and breast cancer self-examination. AMSTAR-2 assessment identified 6 reviews of high or moderate quality. The narrative synthesis found low-quality evidence supporting skin self-examination, but educational interventions and personalized risk information showed some promise in increasing self-examination awareness and detection behavior.

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Accuracy of mobile digital teledermoscopy for skin self-examinations in adults at high risk of skin cancer: an open-label, randomised controlled trial

Authors: Avilés-Izquierdo, Baade, Berwick, Boyce, Chambers, Chao, Djaja, Genders, Hamidi, Janda, Janda, Janda, Kandel, King, Kroemer, Li, Luttrell, Manahan, Markun, Morze, Pike, Rat, Robinson, Tschandl, Venables, Wu

Published: February 20, 2020

In this RCT of 199 high-risk participants, self-examination sensitivity ranged from 75–88% at the lesion level depending on method, meaning 12–25% of clinically suspicious lesions were missed during self-exams. Even with teledermoscopy assistance providing 88% diagnostic concordance with in-person clinical examination, a proportion of lesions were missed or misclassified. All participants required follow-up in-person whole-body clinical skin examination within 3 months of their last self-exam to confirm findings. Participants submitted 615–673 suspicious lesions across the study groups, underscoring the importance of professional follow-up for self-detected concerns.

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Sun safety in construction: a UK intervention study

Authors: Borland, J. Houdmont, P. Madgwick, R. Randall, Vallejo-Torres, Woolley

Published: January 1, 2016

This non-randomized interventional study among 120 UK construction workers (intervention n=70, comparison n=50) identified regularly checking skin for moles or unusual changes as the second-most improved behavior at 12-month follow-up after a sun safety education intervention. The study context—high skin cancer incidence among construction workers attributable to occupational sun exposure—underscores the clinical importance of promptly evaluating detected skin changes. Significant positive behavioral change was observed on 9 of 10 measures in the intervention group.

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