Nail abnormalities are problems with the color, shape, texture, or thickness of the fingernails or toenails
Like the skin, the fingernails tell a lot about your health:
• Beau lines are depressions across the fingernail. These lines can occur after illness, injury to the nail, eczema around the nail, during chemotherapy for cancer, or when you do not get enough nutrition.
• Brittle nails are often a normal result of aging. They can also be due to certain diseases and conditions.
• Koilonychia is an abnormal shape of the fingernail. The nail has raised ridges and is thin and curved inward. This disorder is associated with iron deficiency anemia.
• Leukonychia is white streaks or spots on the nails often due to drugs or disease.
• Pitting is the presence of small depressions on the nail surface. Sometimes the nail is also crumbling. The nail can become loose and sometimes falls off. Pitting is associated with psoriasis and alopecia areata.
• Ridges are tiny, raised lines that develop across or up and down the nail.