Fingernails can split for various reasons. Onychoschizia is a common condition that causes horizontal splits within the nail plate. The condition is sometimes accompanied by onychorrhexis, a condition that causes long-wi... More »

www.reference.com Beauty & Fashion Nail Care

Fingernails that split vertically are fairly common, yet typically caused by age as the cells turnover within the nail, explains Mayo Clinic. Nails that are split but also dry and brittle with cracks could be an indicati... More »

www.reference.com Health Pain & Symptoms

Some of the most common causes of fingernail problems and abnormalities are diseases, injury to the nail, infection, drugs and poisonous substances. These factors can contribute to fingernail problems that alter the shap... More »

www.reference.com Beauty & Fashion Nail Care

Discolored fingernails can be a symptom of a fungal infection. There are also a few disorders that can cause nail discoloration, as noted by MedicineNet. More »

Dented fingernails are usually caused by an underlying health conditions, such as psoriasis, eczema, alopecia areata and Reiter Syndrome. These diseases affect the growth of the nail in the nail matrix or cause a loss of... More »

Fingernails are made of multiple layers of a strong material called keratin. Keratin is a protective protein produced by the body. It consists of proteins that form filaments and enzymes. More »

www.reference.com Beauty & Fashion Nail Care

Lemon juice, whitening toothpaste, hydrogen peroxide with baking soda, denture cleaning tablets, and tea tree oil can whiten fingernails. There are many reasons why fingernails are not as white over time. Nail polish is ... More »

www.reference.com Beauty & Fashion Nail Care