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Doctor insights on: Fingernails Lines

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Why do my fingernail have lines?

Why do my fingernail have lines?

Lots of reasons: When you say "lines" it is difficult to say as there are many types of lines. The most common lines seen are longitudinal (running along the length of the nail). More specifically, longitudinal melanonychia means dark lines along the nails. This can be variant of normal, particularly in persons with dark skin. However, any new line of pigmentation should be evaluated by a dermatologist. ...Read more

Fingernails (Definition)

Fingernails are the hard coverings at the end of fingertips. Nails are made out of a protein called keratin. they function to protect the fingertip and to increase sensitivity of touch. Good hand hygiene and nail care is important to prevent bacterial ...Read more


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What causes dark lines under fingernails?

What causes dark lines under fingernails?

Injury: Trauma and some illnesses can do this. Remember that nails are related to hair but grow more slowly so that an injury to them may show up over time. I often see this in my oncology patient with certain chemotherapy. They well have lines in the nails. ...Read more

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What causes black vertical lines under fingernails ? I am asking for a 66 yr. Old male.

What causes black vertical lines under fingernails ? I am asking for a 66 yr. Old male.

Blood clots : Tiny blood clots, usually broken off from heart valves then float to the end arteries of the fingertips and get caught in the capillaries of the nail bed. They are not dangerous in and of themselves, but could be reflective of a heart problem. ...Read more

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Are splinter looking brown lines under fingernails something to worry about? There aren't any other symptoms present.

Are splinter looking brown lines under fingernails something to worry about? There aren't any other symptoms present.

Trauma vs infection: The most common cause of splinter like hemorrhages seen through the nail in the ail bed, come from trauma. I've had them in the past from tapping my nails on the desk. I had to break the habit. Splinter hemorrhages as signs of infection are more often seen at the base of the nail near the cuticle. Again, the most common cause of these hemorrhages is trauma, even as minor as tapping your nail. ...Read more

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What does it mean if I have purple lines on fingernails?

What does it mean if I have purple lines on fingernails?

Purple line on nail: Fingernails can have many different signs. Purple lines may represent a couple different things; mole/freckle at the nail base or splinter hemorrhage. The latter is not specific to any disease state, but may be a sign of something else that is going on. If you recently injured your nail bed, that might be a sign of bruising. http://en.wikipedia.org/wiki/splinter_hemorrhage. ...Read more

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What do bad fingernails indicate?

What do bad fingernails indicate?

Derm eval: There are many different conditions that can effect nails. It is best to have your dermatologist evaluate your nails to determine the cause. ...Read more

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Fingernails that curl under why ?

Ingrown nail: Ingrown nail is said to be due to tight shoes. Then try wider shoes. See your doctor or a podiatrist. ...Read more