Black or brown lines appearing on fingernails or toenails are a common finding and are often dismissed as cosmetic changes (1 Trusted Source Melanonychia: Etiology, Diagnosis, and Treatment Go to ...

Your nails serve as more than just a canvas for your favorite polish color. These small but significant parts of your body can reveal important information about your overall health, often acting as ...

Melanonychia is a brown or black stain in your fingernail or toenail. You can have a dark line on one nail, a few nails, or all of your nails. The line is caused by the natural color in your body ...

Endocarditis is inflammation in the heart’s inner lining. One possible symptom is splinter hemorrhages, thin red or reddish-brown lines under the fingernails. These lines appear when small blood ...

Hands are seen as a sign of grooming and personality. But doctors say nails do much more than complete a polished appearance. They can quietly reflect what is happening inside the body.Nails grow ...