Why Do My Nails Keep Splitting? Causes and What to Do

Nail splitting is a common issue involving the splitting, peeling, or crumbling of the nail plate. This condition stems from various sources, ranging from daily habits and environmental exposures to underlying health conditions. Understanding the cause is key to finding effective solutions and restoring nail health.

Everyday Factors

Daily routines and environmental conditions often contribute to nail splitting. Frequent water exposure, from hand washing or dishwashing, weakens the nail plate. Nails absorb water and expand, then contract as they dry, leading to brittleness and splitting. Harsh chemicals in cleaning products, soaps, and acetone-based removers strip natural oils, causing dryness and fragility.

Physical trauma, even minor actions like typing or using nails as tools, can also cause nails to split. Aggressive filing techniques can contribute. Injuries to the nail bed can result in permanent splitting as the nail grows out. Environmental factors like cold, dry weather further dehydrate nails, making them prone to breakage. As individuals age, nails naturally become thinner and more brittle, increasing susceptibility to splitting.

Underlying Health Issues

Beyond external factors, internal medical conditions and nutritional deficiencies can cause nail splitting. Deficiencies in specific vitamins and minerals play a role in nail health. Biotin, a B vitamin, is important for nail strength; its deficiency can lead to brittle, splitting nails. Iron deficiency anemia, where the body lacks sufficient iron, also contributes to brittle nails, sometimes causing them to become spoon-shaped. Zinc deficiency is another nutrient imbalance that may affect nail quality.

Thyroid conditions, both underactive (hypothyroidism) and overactive (hyperthyroidism), impact nail health. Hypothyroidism may cause nails to become weak, thin, and slow-growing, while hyperthyroidism can lead to brittle nails or shape changes. Fungal infections can make nails brittle, discolored, and prone to splitting as they weaken the nail structure. Psoriasis, a skin condition, can affect nails, causing pitting, thickening, discoloration, and splitting.

Home Care Strategies

Consistent home care strategies can improve nail health and prevent splitting. Regular moisturization of both nails and cuticles maintains flexibility and prevents dryness. Using a hand cream or oil, especially after washing hands or water exposure, helps replenish lost moisture.

Protecting nails from harsh elements is another step. Wearing gloves during household chores, like dishwashing or cleaning, shields nails from excessive water and chemicals. Gentle nail care practices also make a difference. This includes filing nails in one direction to prevent tearing and avoiding their use as tools. Choosing acetone-free nail polish removers can also help, as acetone can be drying.

A balanced diet contributes to overall nail health. Protein-rich foods, such as lean meats, eggs, and legumes, support keratin production, which is the main component of nails. Incorporating foods high in biotin, like eggs, nuts, and leafy greens, can be beneficial. Staying well-hydrated ensures nails receive adequate moisture from within, promoting strength and resilience.

When to Seek Medical Advice

While many cases of nail splitting can be managed with home care, professional medical advice is sometimes beneficial. If nail splitting persists despite consistent home care strategies, it may indicate an underlying issue that requires medical attention.

Certain accompanying symptoms also warrant a doctor’s visit. These include pain, swelling, redness, or discoloration around the nails, as these can be signs of infection. Changes in nail shape, such as severe curving or thickening, or if the nail separates from the nail bed, should prompt a consultation. If there is no clear external reason for the splitting, or if other health issues are suspected, a doctor can conduct tests to diagnose any underlying medical conditions or nutritional deficiencies and recommend appropriate treatments.