Question 1

what causes dark lines under fingernails?

Accepted Answer

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.

Question 2

60 year old dad had sudden dark red/brownish colored area show up around his fingernails. not in nails but on skin on the sides. many fingers affected. thought it was bleeding under the skin? has almost entirely gone away after about two weeks.cause?

Accepted Answer

Do not know: A similar picture is sometimes seen in children with a viral infection.
Wish you and your father good health!

Question 3

what causes my finger nails and toe nails to be a dark color?

Accepted Answer

This could be a: bacterial or fungal infection, or even stain from chemical agents. see dermatologist for diagnosis and treatment options

Question 4

what causes ridges in yourfingernails?

Accepted Answer

No worries: Vertical nail ridges extend from the cuticle to the tip of the nail. Vertical nail ridges often become more numerous or prominent with age, possibly due to variations in cell turnover within the nail.

If your fingernails change color or you develop horizontal nail ridges, consult your doctor. These changes could indicate an underlying health condition.

Question 5

what causes fingernails to start spooning?

Accepted Answer

Koilonychia.: Possible causes include:  iron-deficiency anemia, hemochromatosis, Raynaud's phenomenon or lupus erythematosus.

Question 6

what causes lines through your fingernails?

Accepted Answer

Depends: Vertical ridges are part of normal growth of nails. You may visit this site for more info in this topic: https://www.mayoclinic.org/healthy-lifestyle/adult-health/expert-answers/nails/faq-20058541
Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. 
Practice safe sex, if you have sex.

Question 7

what causes fingernails to fall off occasionally?

Accepted Answer

Varies: The cause of fingernails falling off can be secondary to trauma, infection, or other systemic diseases.

Question 8

what would cause horizontal ridges on fingernails?

Accepted Answer

Beau's lines: Beau's lines, which are grooves that run horizontally across the nail plate. They usually develop when nail plate growth, which begins in the nail matrix (located under the cuticle), is temporarily disrupted. This can occur with direct injury to the nail matrix; an inflammatory condition such as psoriasis; infection around the nail plate; repetitive picking at the nails or cuticles; or sickness.

Question 9

what causes these vertical ridges in my fingernails?

Accepted Answer

Many reasons: Vertical ridges on nails are basically harmless & can be related to heredity, aging, & nail dryness or injury. The appearance of ridges may be reduced by regular moisturizing of the nail & cuticle & avoidance of harsh soaps that are drying. Nail appearance can reflect overall health and nutrient status so supplementation may help. Consider fish oil, biotin, &/or a multivitamin with minerals.

Question 10

why do fingernails twist as they grow and cause pain?

Accepted Answer

Fungus infection: Fungus infection could cause painful disfigured nails. Also a change in bone could press on the nails and cause painful disfigured nails.

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Doctor answers about:

What causes dark lines in fingernails

A member asked:

What causes dark lines under fingernails?

A member asked:

60 year old dad had sudden dark red/brownish colored area show up around his fingernails. not in nails but on skin on the sides. many fingers affected. thought it was bleeding under the skin? has almost entirely gone away after about two weeks.cause?

A member asked:

What causes my finger nails and toe nails to be a dark color?

A member asked:

What causes ridges in yourfingernails?

A member asked:

What causes fingernails to start spooning?

A member asked:

What causes lines through your fingernails?

A member asked:

What causes fingernails to fall off occasionally?

A member asked:

What would cause horizontal ridges on fingernails?

A member asked:

What causes these vertical ridges in my fingernails?

A member asked:

Why do fingernails twist as they grow and cause pain?

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