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Doctor insights on: Vertical Lines On Fingernails

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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

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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Hello, I am an Asian girl with fair skin and I have the vertical black lines on my fingernails and toenails. What does this mean? Thanks.

Hello, I am an Asian girl with fair skin and I have the vertical black lines on my fingernails and toenails. What does this mean? Thanks.

Chemical reaction: Vertical lines in bot finger and toenails could be due to some chemical that was ingested.Horizontal lines are more common and again caused by a drug or something ingested. ...Read more

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What causes these vertical ridges in my fingernails?

What causes these vertical ridges in my fingernails?

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. ...Read more

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What are the vertical ridged striations in my fingernails caused by, and is this cause for alarm?

What are the vertical ridged striations in my fingernails caused by, and is this cause for alarm?

Soft nails: A number of concubines can result in linear striations poor nutritional state, low vitamin levels. Two products which can strengthen the nails are deramanail and genedur. The addition of oral digestive enzymes is useful for strengthening weak nails according dr jonathan wright of the tahoma clinic. ...Read more

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What are the various medical causes for vertical striations untop of fingernails?

What are the various medical causes for vertical striations untop of fingernails?

Thinning : Usually just associated with thinning nails and not necessarily systemic disease. ...Read more

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What could cause a brown vertical line and horizontal ridges on one side of only one fingernail?

What could cause a brown vertical line and horizontal ridges on one side of only one fingernail?

More info needed: Sounds like you damaged the nail bed at some point in time. Could also be fungal. Can you re-ask your question and attach a picture???? ...Read more

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I have vertical striations unstop of my fingernails . I read somewhere that this is a sign of fibromyalgia, which i just happen to have. Is this true?

I have vertical striations unstop of my fingernails . I  read somewhere that this is a sign of fibromyalgia, which i just happen to have. Is this true?

No!: Zero relationship. Fibro is an arthritis caused by impaired central pain modulation. There are many causes for vertical nail ridges, but fms is not one. ...Read more

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What causes brittle fingernails with vertical ridges?

Brittle nails: Everyone has brittle nails to some extent, some more than others. Aging can cause slowed nail growth and dull, brittle, or yellowish nails as the flow of moisture and natural oils to the nail bed declines. A lack of moisture or too much moisture can worsen an already brittle condition. Dry heat, detergents, nail polish remover, or harsh chemicals encourage cracked and dry brittle nails. ...Read more

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What causes vertical ridges on my fingernails? I have it nearly all fingers.

What causes vertical ridges on my fingernails?  I have it nearly all fingers.

Mainly aging: Increase in vertical ridges of the fingernails as age, and this can be a normal development. Onychorrhexis is the medical term used to describe longitudinal ridges on the nails that often accompany brittle nails.Trauma may also be a cause of nail ridges. Nutritional causes such as vitamin deficiency less common. ...Read more

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Ridges on fingernails indicate what? I have vertical ridges on my fingernails and horizonal ridges on my big toenail

Ridges on fingernails indicate what? I have vertical ridges on my fingernails and horizonal ridges on my  big toenail

Ridges on nails: The vertical ridges may be normal for you or a metabolic problem. The horizontal ridges are usually called "trauma lines" on the toenails and indicate changes in your nail growth pattern at the root level. ...Read more

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I'm Male in my mid 20's and weigh 48kgs. There is a Light coloured vertical Line running from the base of my Left Hand's Index Fingernail to its Tip.

I'm Male in my mid 20's and weigh 48kgs. There is a Light coloured vertical Line running from the base of my Left Hand's Index Fingernail to its Tip.

Nail lines: One Light colored vertical line in a fingernails usually has no medical significance. However multiple lines with ridges and brittleness may. A dermatologist could evaluate you as needed. Some people with brittle nails take the supplement biotin to strengthen fingernails and improve hair health. ...Read more

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I've got a vertical dark line on both my thumbs' fingernails and one much more lighter on my forefinger's nail . What could it mean?

I've got a vertical dark line on both my thumbs' fingernails and one much more lighter on my forefinger's nail . What could it mean?

Nail lines : Multiple nail lines are typically normal. Rarely it may be do to an underlying mole or rarely melanoma skin cancer. Usually only one nail is involved in cancerous cases. It's best to ask your dermatologist. ...Read more

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I have a thin black vertical line along my entire fingernail that grows after trimming it, but doesn't change in width. Could this be cancer?

I have a thin black vertical line along my entire fingernail that grows after trimming it, but doesn't change in width. Could this be cancer?

See a dermatologist: You need to visit a dermatologist to evaluate the area. It could be blood underneath your nail cause by trauma when trimming the nails or fungus. You may need a biopsy of the nail to make sure that this is not a melanoma. This is the most deadly of all the skin cancers. ...Read more

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I have a brown vertical line on my left thumb and a lunula on my left index finger. What do these mean? My right fingernails are perfectly normal.

Many things: The line is likely a melanoncyhia which can be normal particularly in african/african american descent. It can also represent infections, trauma, or inflammatory problems. Remember a lunula is a normal part of nail anatomy. If it's abnormally large, it may be a Terry's nail(though this tends to affect multiple nails) or just a variant of normal. Seek help from your doctor for more feedback. ...Read more

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I have fingernail fungus on all my fingers. The nailbed is yellow with dark vertical streaks. It is painles nd I've had it for 9 months. Nail deformed?

I have fingernail fungus on all my fingers. The nailbed is yellow with dark vertical streaks. It is painles nd I've had it for 9 months. Nail deformed?

Not fungus: Vertical streaks in the nails is not indicator of fungus. This may be extra pigment going from your skin to the nails, which is harmless and not treatable. The yellow discoloration may be from a vitamin deficiency which may clear with OTC Biotin. See your doctor before starting any supplements. ...Read more

Dr. Peter Lio Dr. Lio
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What is the vertical brown line under fingernail? I'm taking iron vitamin for anemic. 8 month ago I use clobesatol for alopecia.

Dr. Peter Lio Dr. Lio
1 doctor agreed:
What is the vertical brown line under fingernail? I'm taking iron vitamin for anemic. 8 month ago I use clobesatol for alopecia.

Melanonychia: Melanonychia is a brown-to-black line within the nail, frequently seen in patients with darker skin and often on multiple nails. It can be seen in certain syndromes or due to medications. Rarely, it can be a melanoma of the nail and so needs evaluation by a dermatologist. Probably not the nail changes of anemia or alopecia which are usually not brown lines. ...Read more

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I have a light colored brown vertical line on my index finger and middle fingernail on my left hand. I used to have a habit of biting my nail and peeling off layers from my nails, could this be a result? I hope this isn't anything too serious! Thanks so m

I have a light colored brown vertical line on my index finger and middle fingernail on my left hand. I used to have a habit of biting my nail and peeling off layers from my nails, could this be a result? I hope this isn't anything too serious! Thanks so m

So do I!: So do I on my index finger! This is completely benign (not a health problem at all) and has nothing to do with your previous biting habits. Think of it like a freckle or a discolored hair. It is made the same way by the nail cells right at the quick. They put dark pigment (melanin) into their growing nail and it extends as the nail grows. Think of it as just making you more unique and special! ...Read more