Jan 4, 2013 · Melanonychia: Longitudinal melanonychia is a brown-to-black line within the nail. It is frequently seen in patients with darker skin types and often on multiple nails. It can be seen in certain syndromes (e.g., laugier-hunziker) or due to medications.

Sep 12, 2018 · Trauma: A dark line that runs vertically down the nail can indicate that you might have traumatized the nail matrix(the area where the nail starts growing). Other possibilities are fungus, melanoma and genetics. See your doc for a full evaluation.

what causes a very thin vertical black line down thumb nail?: Nail line: Usually it is a normal variant. Sometimes a mole or even a

Sep 28, 2016 · Pigment: Thisispigment from a mole qt base of nail. If there're multiple this is family charcteristic. However if there is only one it coukd

Jan 16, 2014 · Probably pigment: It most likely is non malignant melanonychia. The most serious would be a cancerous lesion, although this is very rare. There are many more probably reasons why your nail has this dark line. Please have it evaluated by a doctor.

May 5, 2019 · Vertical nail ridges often become more numerous or prominent with age, possibly due to variations in cell turnover within the nail. Trauma is another etiology.Sometimes nails are brittletransverse line development or discoloration of nails may imply underlying chronic disease.

Sep 21, 2013 · Depends on the color: And direction. Transverse white lines can be fungal or a minor injury; longitudinal white lines may be damage to the nail plate; a dark line can be normal, especially in dark-skinned people, or it could be a melanoma. There needs to be more information and examination to answer more accurately.

what does it mean if i have purple lines on fingernails?: Purple line on nail: Fingernails can have many different signs. Purple

Oct 28, 2018 · Im a 29 year old african american male and noticed I have streaks in my thumb nails. Is this something to worry about? Im a 21 year African American female and I have a very thin brown or black looking line running vertically up my toe nail should I be concerned? I am african american and the uv nail dryer is turning my hands dark.

I've noticed small/thin black lines keep appearing under the tips of my fingernails over the past few days. what could this be from? 2 doctors weighed in across 2 answers A member asked: