Finding a green spot beneath acrylic can be alarming. One possible cause is a bacterial nail infection often called green nail syndrome, sometimes associated with Pseudomonas bacteria. But appearance alone cannot establish a diagnosis: other causes of discoloration are possible.
Why can a nail turn green?
Moisture trapped in a space where an enhancement has lifted can create conditions that favor bacterial growth. Green nail syndrome can produce greenish, blue-green or dark discoloration of the nail plate. The color does not necessarily mean mold, and a technician cannot diagnose an infection just by looking.
What should you do first?
Do not cover the spot with new acrylic, gel or polish. Avoid prying off a firmly attached enhancement yourself; arrange for appropriate professional removal or assessment without injuring the nail. Keep the area clean and dry, and contact a healthcare professional for diagnosis and treatment advice.
Can I just file the green spot away?
No. Aggressive filing can damage the natural nail and does not reliably address an underlying problem. Avoid household bleach, harsh chemicals and improvised treatments on the nail or skin.
When should you seek medical attention?
Seek medical evaluation for persistent discoloration, nail separation, pain, redness, swelling or drainage. Prompt assessment is especially important if you have diabetes, poor circulation or a weakened immune system. A rapidly worsening painful or swollen finger needs urgent care.
How can lifting be prevented?
A properly fitted, maintained enhancement and timely attention to lifted edges can reduce opportunities for moisture to collect. Avoid picking at gaps and ask for professional assessment when separation develops. Regular handwashing is important; dry your hands thoroughly afterward.
Frequently asked questions
Is every green spot Pseudomonas?
No. Color alone is not enough for a diagnosis.
Can I paint over a green nail?
Avoid covering unexplained discoloration until it has been assessed.
Will it disappear when the nail grows out?
Discoloration may move outward as a nail grows, but suspected infection still deserves medical guidance rather than waiting without assessment.
More nail advice
Explore Why acrylic nails lift and when to remove old acrylic, browse Kevin's nail portfolio, or review available services.
Educational information only. Individual nail conditions and products vary; seek a qualified professional for concerns about nail health.