Green Discoloration Under a Lifted Acrylic
Jenna, 24, arrives for a fill on a two-week-old acrylic set. When you remove the right thumbnail enhancement, the nail plate has a green-black patch near the lateral fold, the free edge is lifted, and the area feels damp and slightly soft. Jenna says the enhancement lifted after she used it to open a can, and she glued it down twice with household glue. She has no fever, pain, or pus, but she wants a new full set today because she leaves for a trip tomorrow. She mentions she 'always gets this' and soaks her nails in vinegar. The salon uses one shared 180-grit file for natural nails and enhancements, and the tabletop disinfectant jar has no lid. The nail plate otherwise shows mild thinning from repeated filing. She asks you to 'just cover it' with dark polish. She is not diabetic and takes no medications.
1. What is the most likely condition, and how would you distinguish it from a fungal infection or a bruise? What is the service decision?
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Most likely Pseudomonas bacterial colonization, often called green spot, from moisture trapped under a lifted enhancement. The green-black color, damp soft area, lifted free edge, and history of gluing down a lift fit that pattern.
Distinguish:
- Fungal infection tends to be yellow-white, thick, crumbly, and slower; it may involve the nail plate and surrounding skin.
- A bruise is dry, dark, and usually follows trauma; the plate is not soft or lifted.
Service decision: do not apply a new enhancement, do not cover it with polish, and do not glue it. Refer to a physician or dermatologist. You can offer a gentle manicure on unaffected nails only if you can avoid cross-contamination, but I would not treat the affected nail.
2. List the sanitation steps you must take for the implements, file, and workspace, and explain why each matters.
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- Discard the shared file and any porous single-use items in a closed waste bag. They cannot be disinfected.
- Clean the implement with soap and water, then disinfect with an EPA-registered hospital-grade tuberculocidal disinfectant in a covered container for the label contact time, commonly 10 minutes.
- Clean and disinfect the tabletop and lamp; wash hands before and after; wear gloves.
- The disinfectant jar has no lid; mix fresh solution, cover it, and never leave files floating in it.
- Keep clean and dirty implements separated.
Why: Pseudomonas survives in moisture and on porous surfaces; sharing a file can transfer bacteria to other clients. Disinfection only works on clean surfaces and at the correct dilution and contact time.
3. How do you explain this to Jenna and document it without diagnosing?
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Explain without diagnosing: 'There is a green-black area and the nail is lifted. That can be a bacterial infection, and covering it could make it worse. I can't safely put an enhancement over it. Please have a doctor look at it before your trip.' Do not say 'you have Pseudomonas' unless licensed to diagnose.
Document the visual findings, client statements about the lift, glue, and vinegar soaks, the service refused, referral, and aftercare: keep it dry, do not glue or polish, do not pick. If she insists, still refuse; offer a referral. Note that a waiver does not make an infected nail safe to cover.