What Causes Fingernails to Split Down The Middle?

Reviewed by: Dr. Ritu Budania



Disclaimer: Informative, not prescriptive.

Excess Exposure to Water

Frequent exposure to water like utensil or clothes washing weakens nails, leading to splitting and brittleness from moisture absorption and drying.

Artificial Nails

Habits such as nail biting, improper nail care, and prolonged use of artificial nails can weaken nails and cause splitting.

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Picking or Biting Nails

Biting or picking at nails can lead to small cracks and severe splits. Quitting these habits reduces the risk of nail damage.

Nail Injuries

Accidents like stubbing a toe or hitting a finger can directly damage nails, leading to splitting.

Occupational Hazards

Jobs or activities requiring frequent hand contact may increase the risk of nail damage and splitting.

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Infections and Illnesses

Bacterial and fungal infections, as well as skin diseases like psoriasis, can weaken nails and increase the risk of splitting.

Thyroid Disorders

Both underactive (hypo) and overactive (hyper) thyroid can affect nail health, leading to issues like brittleness or splitting.

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Nutrient Deficiencies

Shortage of biotin, protein, and other essential nutrients can contribute to weak, brittle nails that are prone to splitting.

Aging

As we age, our skin loses elasticity, moisture, and thickness, which can impact nail health and lead to splitting.

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Iron Deficiency Anemia

Low iron levels can lead to symptoms such as brittle, weak, and splitting nails.