Diabetic Pedicure with a New Pigmented Nail Band
A 68-year-old client with type 2 diabetes (diagnosed 12 years ago, most recent A1c 8.8%) requests a full pedicure. She reports intermittent numbness in both feet. Screening with a 10-g monofilament shows absent sensation at six of ten tested sites on the soles and toes. Her heels are thickly callused with fissures, and her toenails are thickened and difficult to trim. On the right great toenail, a 4-mm-wide dark brown longitudinal band runs from the cuticle to the free edge; she says it has been there about three months and is not painful. She wants you to reduce the calluses with a credo blade, thin the nails with an electric file, and apply gel polish for a wedding in three weeks. She has no open sores, fever, or current foot pain.
1. Assess her risk and decide which parts of the requested pedicure are appropriate, if any.
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This client is high risk: long-standing diabetes with poor control (A1c 8.8%) and documented loss of protective sensation. She is at elevated risk for ulceration and infection. The fissured heels and thick nails add risk. Sharp callus reduction with a credo blade and aggressive e-file thinning are not appropriate in this setting; a minor slip can create a wound she may not feel. Do not cut cuticles. A limited, gentle service may be possible: inspect, cleanse, file nails straight across with a hand file, gently reduce callus with a fine-grit paddle, and moisturize. If there is any doubt about circulation, skin integrity, or the pigmented band, refer to a podiatrist. Follow state scope rules; some settings require medical clearance for high-risk diabetic feet.
2. What is the significance of the pigmented band, and what should you do?
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A new, 4-mm-wide dark brown longitudinal band on the great toenail is a red flag for subungual melanoma or another nail unit lesion. It should not be thinned, covered with gel, or treated as a cosmetic problem. Document its width, color, borders, and duration; ask about trauma but do not assume that explains it. Refer promptly to a dermatologist or podiatrist. Do not tell the client it is cancer; explain that a new dark streak needs medical evaluation. Delay cosmetic polish on that nail until it is evaluated.
3. Documentation and communication: what would you record and say?
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Record the monofilament results (six of ten sites absent), the A1c reported by the client, skin condition, fissures, nail thickness, band measurements, services declined or modified, referral, and client education. Communicate plainly: 'Because of your diabetes and numbness, I am not going to use a blade on your heels or thin this nail. The new dark streak should be checked by a doctor before we cover it. I can do a gentle shaping and moisturizing today, or we can reschedule after your doctor clears you.' Give written referral information and note the client's response.