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Skin, Hair & Nails

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Skin, Hair & Nails Guide

Rosa Cabrera RN

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ask: What causes my finger nails to split down the middle, a long split line?

By Anonymous
 
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Rosa Cabrera RN

Hi Anonymous,

It sounds like you may have Onychoschizia, commonly known as nail splitting but also known as onychoschisis or lamellar dystrophy, is a condition that causes horizontal splits within the nail plate. Nail splitting is often seen together with onychorrhexis – long-wise (longitudinal) splitting or ridging of the nail plate – and these 2 diseases together are called "brittle nail syndrome."

  • Frequent wetting and drying of the hands is the most common cause of nail splitting, so this condition is, therefore, common among house cleaners, nurses, and hairdressers.
  • Nail splitting may also be caused by nail cosmetics (hardeners, polish, polish removers/solvents), nail procedures, and occupational exposure to various chemicals (alkalis, acids, cement, solvents, thioglycolates, salt, sugar solutions).
  • Injury (trauma) may also play a role in the development of brittle nails.
  • Brittle nails may occur due to medical problems, including gland (endocrine system) diseases, tuberculosis, Sjögren syndrome, and malnutrition.
  • People with other skin diseases, such as lichen planus and psoriasis, as well as people taking oral medications made from vitamin A, may also develop nail splitting.

Self-Care Guidelines
  • Reduce how often you wet and dry your nails.
  • Wear plastic or rubber gloves over thin cotton gloves while doing all housework, including food preparation.
  • Keep the nails trimmed short to reduce worsening of nail splitting.
  • Soak the nails in water daily, 15 minutes at a time, to increase the water content (hydration) of the nails.
  • Apply moisturizers (emollients), such as petroleum jelly or Cetaphil®, to improve nail hydration.
  • Nail-hardening agents containing formaldehyde may increase nail strength, but they should be used cautiously, as they can cause brittleness and other nail problems. Apply these hardeners only to the free edge (growing end) of the nail.
  • Acrylate-containing hardeners are also effective, but they may cause an allergic reaction in the skin.
When to Seek Medical Care

Nail splitting is generally considered a cosmetic problem, but see your doctor if the condition becomes bothersome.

http://www.empowher.com/media/reference/brittle-nails

Hope this helps,

Rosa

January 14, 2012 - 2:16pm
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