Should a recurrent skin lesion that resolves and returns over more than six months in a patient with a family history of melanoma be evaluated for possible melanoma?

Urgent Specialist Referral Required

A recurrent skin lesion that repeatedly resolves and returns over 6+ months in a patient with a family history of melanoma should be referred urgently to a dermatologist or surgeon with expertise in pigmented lesions, with the patient seen within 2 weeks of referral. 1

Why This Lesion is Concerning

This presentation raises significant red flags for melanoma:

• Evolution over time (>6 months) is one of the most critical warning signs for melanoma 2, 3, 4
• Recurrent behavior (appearing, resolving, reappearing) represents a form of evolution and change that warrants immediate evaluation
• Family history of melanoma places this patient in a high-risk category requiring heightened surveillance 1, 5

The UK guidelines explicitly state that patients with lesions suspicious of melanoma should be referred urgently, with systems in place to see them within 2 weeks 1. While these guidelines are from 2002-2010, they remain the most specific guideline-level evidence addressing referral criteria.

Key Clinical Features to Document

When evaluating this lesion, specifically assess for:

• Evolution: Any change in size, shape, or color over the 6-month period 2, 3, 4
• Rapid growth: Growth within 6 weeks or appearance as a new atypical lesion (the single most important independent predictor of melanoma) 3, 4
• Sensory changes: Itching or increased awareness of the lesion 2, 3
• Inflammation: Reddish tinge within the lesion 2, 3
• Surface changes: Crusting, oozing, or bleeding 2, 3
• Firmness: Whether the lesion feels firm to touch 3
• ABCDE criteria: Asymmetry, Border irregularity, Color variegation, Diameter >6mm, Evolution 6, 4

Family History Assessment

The family history requires specific clarification:

• Three or more cases of melanoma in the family → refer to clinical genetics for counseling 1, 7
• Two cases in the family → may also benefit from genetic counseling, especially if one case had multiple primary melanomas or atypical mole syndrome 1
• Even a single family member with melanoma increases this patient's risk and lowers the threshold for biopsy 5

Critical Pitfalls to Avoid

Do not dismiss this as a "pimple" or benign lesion simply because it appears to resolve temporarily. Melanoma can present with unusual patterns, including:

• Recurrent melanoma can present as rashes or atypical lesions 8, 9
• Not all melanomas are pigmented nodules; they can have varied presentations
• The recurrent nature itself is a form of evolution and warrants investigation

Do not delay referral while monitoring the lesion further. The patient has already observed this behavior for >6 months, which is sufficient evolution to warrant urgent evaluation.

Do not perform a shave or punch biopsy in primary care if melanoma is suspected, as this makes pathological staging impossible 1. The specialist should perform a full-thickness excisional biopsy with 2-5mm margins if melanoma is suspected.

Immediate Action Steps

1. Refer urgently to dermatologist/surgeon with pigmented lesion expertise within 2 weeks 1
2. Document the lesion's location, size, and all concerning features
3. Photograph the lesion if possible for specialist review 1
4. Examine for lymphadenopathy 1
5. Perform full skin examination looking for other suspicious lesions 1

The combination of recurrent behavior over 6+ months plus family history of melanoma creates a clinical scenario where the risk of missing melanoma far outweighs the inconvenience of specialist referral. Early detection of melanoma <1mm thick has >90% 5-year survival 10, making urgent evaluation paramount for mortality reduction.