Most common people their 50s 70s. common African American, Native American, Asian races. B. Band color is brown-black, wider 1/8th an inch, border irregular .
Melanonychia the term dark pigmentation the nails. discoloration the nails be black brown. Melanonychia be natural occurrence people dark skin, it .
The bruise starts red, becomes purple, dark brown, finally black blood beneath nail pools clots. Expect black toenail grow in 6 9 months .
The lines brown black usually like stripe begins the bottom your nail bed continues the top. Melanonychia appear one nail several. lines .
Melanonychia affect or multiple fingernails toenails. can present a brown black discoloration may start the nail matrix appear a band the nail. Total melanonychia affects whole nail. are possible of melanonychia. occurs due an increase melanin production pigmentation .
A black line your nail (medically as melanonychia) a streak dark pigmentation runs the nail bed. can a normal color variation, in people darker .
It more prevalent people skin color. all Afro-Caribbean people develop black-brown pigmentation the nails the age 50. Melanonychia affects to 20% Japanese people. White-skinned people are commonly affected.
In some cases, may need treatment, the line grow with nail. health conditions causing splinter hemorrhages, melanonychia, Beau lines vary, treatment .
In some cases, can result other conditions, melanoma, skin cancer develops beneath toenail; diabetes, poor circulation leads changes nail colour; peripheral arterial disease, poor blood flow the foot leads discolouration. in cases black toenail fungus, answer onychomycosis.
Some people a black vertical line the nail nutrient deficiencies, as: protein energy malnutrition; vitamin deficiency; vitamin B12 deficiency; Vitamin B12 deficiency-induced melanonychia typically easily reversible Trusted Source PubMed Central Highly respected database the National Institutes Health to source.
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