What does it mean if you have brown lines on your toenails?
Melanonychia is caused when the pigment cells, called melanocytes, deposit melanin into the nail. Melanin is a brown colored pigment. These deposits are usually grouped together. As your nail grows, it causes the stripe of brown or black to appear on your nail.
What are the little brown lines on my nails?
Splinter hemorrhages look like thin, red to reddish-brown lines of blood under the nails. They run in the direction of nail growth. They are named splinter hemorrhages because they look like a splinter under the fingernail. The hemorrhages may be caused by tiny clots that damage the small capillaries under the nails.
What does Melanonychia look like?
Melanonychia is a brown or black color in your nail. It can affect your fingernails or toenails. It can be in one nail, a few nails, or all of your nails.
Can vitamin deficiency cause brown lines on nails?
Both iron and B12 are necessary for keeping nails strong and healthy. A deficiency in vitamin B12 can result in entirely blue nails, bluish-black pigments with wavy longitudinal dark streaks and brownish pigmentation ( 5 , 6 ).
What does melanoma look like under the toenail?
Subungual melanoma often starts as a brown or black streak under a toenail or fingernail. A person may mistake it for a bruise. Share on Pinterest A bruised nail, and dark streaks or stains on the nail with no known cause, may be signs of subungual melanoma.
What deficiency causes lines on nails?
Anemia. A condition in which the red blood cells decrease usually due to deficiency of iron, vitamin B12 or folic acid is called anemia. Iron deficiency alone may be responsible for triggering skin problems. Associated effects can include brittle and fragile nails which may develop vertical ridges or lines.
