What should you know about finger nail lifted from nail bed?

The loose portion may appear white because air has entered beneath the nail. It can catch on clothing, collect debris, or gradually extend toward the base. A recent knock, manicure trauma, chemical exposure, or prolonged wet work may be relevant. [Nail Fungus](/conditions/nail-fungus/) and [Nail Psoriasis](/conditions/nail-psoriasis/) are possible causes, but a clinician may also consider inflammation and other nail disorders. The separated section cannot reattach to the nail bed; healthy growth has to advance from the base.

Keep the nail short by trimming only the detached edge with clean tools. Do not pull it off, probe underneath, or glue it down. Wear gloves for wet or chemical work, dry the finger thoroughly, and protect it from further knocks. Avoid nail extensions and irritating products until the cause is clear. If the loose nail repeatedly catches or the underlying problem needs treatment, a dermatologist may discuss [Nail Surgery](/treatments/surgical-dermatology/nail-surgery/).

Arrange care if separation follows a crush injury, spreads toward the cuticle, affects several nails, or persists without an obvious trigger. Seek prompt attention for increasing pain, swelling, warmth, pus, or redness moving beyond the nail. A new dark mark beneath a separated nail, especially one that changes or reaches nearby skin, needs timely dermatology review.

Ask what is most likely causing the separation, whether the nail or skin needs testing, how much of the loose edge can be trimmed safely, and how to protect the new growth. Mention injury, manicures, cleaning chemicals, skin rashes, and previous nail problems.