Melanoma, basal cell carcinoma (BCC), and squamous cell carcinoma (SCC) have become increasingly common. Early diagnosis and treatment are essential because prompt diagnosis substantially improves the likelihood of curative treatment. The following five practical strategies can help clinicians systematically evaluate suspicious skin lesions during routine clinical practice.

Tip 1: Apply the ABCDE Rule Consistently

The ABCDE rule remains a simple and practical tool for systematically evaluating pigmented skin lesions.

• A — Asymmetry. The spot is not round or oval but irregularly shaped.
• B — Border. The edges are blurred, frayed, or jagged.
• C — Color. The spot has multiple colors or uneven pigmentation, for example, light and dark brown, black, or reddish.
• D — Diameter. The spot is larger than approximately 5 mm or is increasing in size. However, smaller melanomas can also occur.
• E — Evolution or elevation. The spot becomes raised above the skin surface or changes in shape, color, size, or surface appearance.

Therefore, the E criterion is particularly important. Any lesion that is new, growing, bleeding, itching, or changing color should be taken seriously and promptly evaluated.

Studies show that the more ABCDE features a mole exhibits, the more likely melanoma is to be recognized, even by non-dermatologists. In clinical practice, moles should not only be examined carefully but also compared with one another. Does one mole stand out from the other? Has it changed over the past few weeks or months, or has it developed symptoms such as itching or bleeding? Such changes would guarantee further evaluation.

Tip 2: Screen High-Risk Patients

However, not every patient requires the same level of examination. Clinicians should be particularly vigilant in individuals with fair skin, numerous or atypical nevi, a personal history of melanoma or nonmelanoma skin cancer, a family history of skin cancer, immunosuppression, organ transplantation, chronic ultraviolet exposure, indoor tanning, or repeated childhood sunburns.

A brief opportunistic skin examination can be highly effective. Clinicians should inspect the face, ears, and scalp in patients with thinning hair, as well as the neck, forearms, backs of the hands, and lower legs. BCCs commonly develop on chronically sun-exposed skin and may initially appear harmless, presenting as a shiny papule, a nonhealing crust, an erythematous plaque, or a lesion that repeatedly bleeds.

Tip 3: Document Lesion Progression

Many dangerous skin lesions are identified not during the initial examination but through changes over time. Therefore, every suspicious lesion should be documented, including its size, location, color, surface characteristics, associated symptoms, and date of assessment. Whenever possible, a standardized clinical photograph with a measurement scale should be taken after obtaining patient consent and ensuring compliance with data privacy requirements.

If a lesion changes, enlarges, bleeds, develops crusting, or fails to heal within a few weeks, it should be evaluated by a dermatologist or biopsied. Follow-up is particularly important for patients with numerous nevi because comparison with previous findings makes it easier to identify new or evolving lesions.

Tip 4: Maintain a Low Threshold for Biopsy or Referral

If melanoma, SCC, or BCC is suspected, clinicians should maintain a low threshold for histopathologic confirmation.

Warning signs include rapid growth, spontaneous bleeding, ulceration, persistence despite treatment, marked induration, pain, new pigmentation, irregular color variation, and a lesion that differed noticeably from the patient’s other skin lesions.

If a lesion cannot be confidently classified as benign and clinical findings remain concerning, it should not be monitored for months. Depending on the clinician’s expertise, lesion location, and available healthcare resources, prompt referral to a dermatologist, biopsy, or complete excision should be considered. Early diagnosis is particularly important for the prognosis of melanoma.

Tip 5: Use Teledermatology for Triage

Teledermatology consultations can help reduce wait times and provide earlier dermatologic assessment of suspicious lesions, particularly in areas with limited access to specialists. It is especially useful for triage, helping determine which lesions require prompt in-person evaluation and which are likely to be benign.

Accurate assessment relies on high-quality clinical images. These should include an overview photograph showing the lesion’s location, a close-up image with a measurement scale, adequate lighting, and sharp focus, along with relevant clinical information, including lesion duration, recent changes, symptoms, risk factors, and previous treatments.

Reviews support teledermatology as a valuable tool for triage, diagnostic support, and improved access to specialist care. However, when clinical suspicion of skin cancer is high, it cannot replace in-person examination or histopathologic evaluation.

Conclusion: Detect High-Risk Lesions Early

Early detection of skin cancer relies on a systematic clinical approach rather than a single diagnostic test. Clinicians should consistently apply the ABCDE rule, identify high-risk patients, document suspicious lesions in writing and with clinical photographs, perform a biopsy or refer the patient early if there is any uncertainty, and use teledermatology for triage. Any lesion that is new, growing, bleeding, nonhealing, or appears different from the patient’s other skin lesions warrants prompt evaluation.

This story was translated from Medscape’s German edition.