How common is discoloured nails in green nail syndrome?

Green nail syndrome is associated with changes in or around the nail that allow moisture and microorganisms to remain under the nail plate. The colour may range from pale green to deeper green and can affect part of a nail or much of it. Nail lifting, tenderness, or a surrounding skin change may occur.

Nail colour alone cannot confirm the cause. Trauma, staining, fungal infection, medicines, and other nail disorders can also alter appearance. A clinician may examine the nail and ask about wet work, nail products, tight gloves, injury, and previous treatments.

Keep the nail clean and dry, wear protective gloves for prolonged contact with water, and avoid picking beneath the nail. Pause nail polish, artificial nails, and harsh removers until the nail has been assessed. Trim only loose edges carefully; do not force a lifted nail back down.

Arrange a medical review if the colour persists, spreads, or returns. Treatment depends on the examination and may include measures to reduce moisture and a prescribed medicine. Do not use leftover antibiotics or antifungal products without advice.

Seek prompt assessment if the nail becomes painful, swollen, warm, foul-smelling, or surrounded by spreading redness, or if you develop fever. People with diabetes, poor circulation, reduced immunity, or significant nail injury should seek advice sooner.

Get urgent help for severe pain after an injury, rapidly increasing swelling, or a wound that will not stop bleeding. These features can signal a complication beyond simple nail discolouration.

What is the most likely reason for this colour change? Is the nail lifted or infected? Should I stop nail products, protect it from water, or use a prescribed treatment? When should the nail be checked again?