What Is Melanonychia? What Causes It and How It's Treated

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. Melanonychia …

Beau's Lines: What They Look Like, Causes, and …

Beau's lines are horizontal indentations or ridges across the nail. They can develop on the fingernails and toenails. Beau's lines are a sign that something interrupted your nail's growth. The reasons why this …

What Are Horizontal Lines on Toenails? [Dark, …

What if I have a horizontal brown line on the toenail? Horizontal brown line could be either dried blood from a trauma or a minor impact, or it could be toenail fungus developing underneath that impacted site. Both are very …

7 nail symptoms and conditions you shouldn't ignore

Common nail conditions and symptoms. Brown vertical stripes on nails. Breaking and brittle nails. Nails with ridges. White spots on nails. Yellow nails or cuticles. Horizontal ridges in …

Beau's Lines: What It Looks Like, Causes & Treatment

Evaluation of nail lines: Color and shape hold clues

In this review, we delineate the three basic types of nail lines —white lines (leukonychia striata), brown-black lines (longitudinal melanonychia), and red lines (longitudinal erythronychia)—and the …

Beware Of Horizontal Lines On Your Nails! Don't …

Discover what you need to know if you notice horizontal lines running across the nails on your fingers.

Pictures of Toenail Colors and What They Mean

The term for brown and sometimes black color on your toenail is melanonychia. Brown usually appears as a line or streak going up and down the nail. Possible causes: Injury; …

Brown Line on Nails: Vitamin Deficiencies and Other Causes

Brown lines or dark stripes on the length of your fingernails or toenails (longitudinal melanonychia) have many causes—from vitamin deficiencies to cancer. …