What causes splitting and cracking nails?

Nails become fragile when the layers of keratin separate. Frequent hand washing, cleaning products, soaking, and then drying can weaken the nail plate. Picking at polish, biting, filing aggressively, or using nails as tools can add tiny breaks that spread. A blow or pressure from tight footwear can affect a toenail as it grows out.

Changes affecting one nail may follow local injury. Several nails changing together can reflect a shared exposure, skin inflammation, or another health issue. Thickening, yellow or white discoloration, debris under the nail, or separation from the nail bed can occur with Nail Fungus.

Keep nails trimmed and smooth rough edges with gentle strokes in one direction. Wear gloves for prolonged contact with water or household cleaners, and dry the hands and feet carefully afterward. Apply a plain moisturiser to the nails and surrounding skin after washing. Give damaged nails time to grow out, and avoid peeling loose layers or covering them with harsh adhesives.

If a nail is painful, discolored, thickened, or lifting, arrange a dermatology assessment before self-treating. A clinician can examine the nail and decide whether testing or a targeted treatment is needed.

Seek medical care for increasing pain, warmth, swelling, pus, bleeding that does not settle, or a dark mark that does not grow out with the nail. Book an assessment when several nails become brittle without an obvious change in nail care, or when the problem keeps returning despite protection and moisturising. Prompt review is also sensible if a nail separates substantially or walking and daily tasks become difficult.

Could a product, repeated wet work, footwear, or an infection explain this nail change? Does the nail need a sample or other testing? Which moisturiser and protective routine suit my nails? How long should I expect the damaged section to take to grow out?