Brittle Nails and Nail Changes

Overview

Nail changes — brittle, splitting, peeling, thickened, discoloured, or ridged nails — are common and have many causes. Like hair, nails reflect general health, and changes can follow nutritional deficiency, thyroid disease, fungal infection, skin conditions, repeated wetting, or trauma. Most nail changes are benign, but persistent or marked changes deserve evaluation, particularly when several nails are affected or the change is new.

Common causes

• Fungal nail infection — thickened, discoloured, brittle nails, often starting at one edge (see Fungal Skin Infection).
• Repeated wetting and harsh chemicals — common in housework and certain occupations.
• Iron deficiency and anaemia — brittle or spoon-shaped nails (see Anaemia & Blood Problems).
• Thyroid disorders — brittle, slow-growing nails (see Thyroid Disorders).
• Skin conditions such as psoriasis and eczema — can affect the nails.
• Nutritional deficiencies — including B12, folate, and zinc.
• Trauma and poorly fitting footwear — for toenails.

Evaluation and investigations

Evaluation examines the nails and asks about wetting, chemicals, footwear, and any general symptoms. Nail clippings may be sent for fungal culture when a fungal infection is suspected. Blood tests — iron studies and ferritin, thyroid function, B12 and folate — are arranged when an internal cause is likely. See Anaemia & Blood Problems, Thyroid Disorders, and Abnormal Test Results.

Management overview

Management treats the cause: antifungal treatment for fungal nails (often prolonged, sometimes needing dermatology or podiatry care), protecting nails from wetting and chemicals, correcting iron or thyroid deficiency, and managing any underlying skin condition. General nail care — keeping nails trimmed, moisturising the nail folds, avoiding trauma — helps recovery.

Warning signs — seek prompt care

• A single nail with a new dark streak or a changing nail pigmentation — needs assessment.
• A nail change with pain, swelling or redness of the nail fold — possible infection.
• Nail changes alongside hair loss, tiredness, or weight change — check for anaemia or thyroid disease.

How we help

Dr. Nayak identifies the cause of nail changes, arranges the right tests, treats internal causes such as iron deficiency and thyroid disease, and refers to a dermatologist or podiatrist for stubborn fungal nails or specialised nail disorders. Consultations are available in-clinic in Bhubaneswar and over teleconsultation.

Related conditions and patient concerns

• Fungal Skin Infection
• Hair Loss
• Anaemia & Blood Problems
• Thyroid Disorders
• Eczema / Dermatitis
• Abnormal Test Results