Having vertical (longitudinal) ridges on the fingernails refers to the presence of tiny raised lines or ridges that run up and down the length of the nail. Ridges are among the different kinds of nail abnormalities that can develop due to aging, nail injury, or underlying medical conditions.
Many people notice an increase in vertical ridges of the fingernails as they age, and this can be a normal development. Aging has been described as the predominant cause of vertical ridges on the fingernails.
Onychorrhexis is the medical term used to describe longitudinal ridges on the nails that often accompany brittle nails.
Ridges in the fingernails could be due to a vitamin deficiency. It could also be because the body lacks proper moisture.
They're caused by a lack of calcium in the diet.
not enough calcium intake
I think it's when you bend your nail back
From lying
The deep *vertical* lines in your fingernails are genetic. If you have *horizontal* ridges in your nails, you should see a doctor.
lack of calcium in your body causes white stripes on teeth and nails.
anemia
Most ridges on the fingernails are caused by normal aging and are common. Some ridges though might be an indication of an underlying health problem especially if there is a change in color.
Seafloor spreading occurs along mid-ocean ridges. Mid-ocean ridges are large mountain ranges on the ocean floor. The shifting in the rock causes the seafloor to spread and allows magma to bubble and form more mountains on the ocean floor.
earths crust causes it
nails
No
Divergent Plate Boundary.
This question should read, "What causes a person to be born with ridges on the biting surface of their front teeth?" Does this occur in any particular race of people?
Can be caused by cardiac disease or malnutrition. Vertical nail ridges, which extend from your cuticle to the tip of your nail are fairly common and often become more numerous as you age. Vertical ridges in your nails are NOT a health concern. Although the exact cause of such ridging isn't known, heredity may play a role. If your fingernails change color or develop horizontal (side to side) not vertical (up and down) ridges, see your doctor. These changes may indicate underlying health problems, such as respiratory or heart disease. But most likely the cause is either malnutrition, aging or mild arthritis. Brittle nails signify possible iron deficiency and thyroid problems, impaired kidney function, and circulation problems. Yellow nails can indicate internal disorders long before other symptoms appear. Some of these are problems with the lymphatic system, respiratory disorders, diabetes, and liver disorders. Nails that chip, peel, crack, or break easily show a nutritional deficiency and insufficient hydrochloric acid and protein. Minerals are also needed. Brittle, soft, shiny nails without a moon may indicate an overactive thyroid. White lines across the nail may indicate a liver disease. White lines horizontally show possible heart disease, high fever, or arsenic poisoning. Nails separated from the nail bed may signify a thyroid disorder. Nails raised at the base ("clubbing") with small white ends show a respiratory disorder such as emphysema or chronic bronchitis. ("Clubbing" with lung disorders is one condition of the nails that is recognized by Standard Medicine.) Ridges can signify a possible infection such as the flu. Downward curved nail ends may denote heart, liver, or respiratory problems. Ridges running up and down the nails indicate a tendency to develop arthritis. Lack of vitamin A and calcium causes dryness and brittleness. Vitamin B deficiency causes fragility, with horizontal and vertical ridges. Insufficient intake of vitamin B12 leads to excessive dryness, very rounded and curved nail ends, and darkened nails. White bands can indicate protein deficiency.
calcium