How common is brittle nails in brittle nail syndrome?

Brittle nail syndrome describes nails that do not hold together well and may separate into layers, crack at the free edge, or peel. Fingernails are often noticed first because they encounter repeated water exposure, detergents, and minor knocks. Toenails can also be affected. The surface may feel rough, and the nail may catch on clothing. Similar changes can result from trauma, eczema, psoriasis, iron deficiency, or fungal infection, so the appearance and surrounding skin should be assessed rather than assumed to have one cause.

Keep nails short with a fine file, smoothing in one direction instead of tearing split edges. Wear gloves for prolonged contact with water or cleaning products, dry hands well, and apply a bland moisturiser to the nails and surrounding skin. Avoid picking layers, aggressive buffing, and frequent solvent exposure. A clinician can check for contributing skin conditions and suggest suitable nail care while the affected nail grows forward.

Arrange a review if changes affect several nails, keep returning, or interfere with daily tasks. Ask for assessment when a nail becomes painful, lifts, changes colour, or develops swelling around it. Prompt care is needed for pus, spreading redness, or severe pain, particularly if you have diabetes or reduced circulation.

Does the pattern fit brittle nail syndrome or another nail condition? Could water exposure, skin disease, medication, or nutrition be contributing? What nail products and protective routine are safest for me?