The Mystery Behind Black Lines on Nails Revealed - Verywell Health
Dec 13, 2025 · A black line on your nail can range from benign (harmless) color variations to more serious conditions like melanoma. While sometimes harmless, any significant or sudden …
What Is Melanonychia? What Causes It and How It's Treated - WebMD
Sep 8, 2025 · Melanonychia is dark nail discoloration caused by pigment buildup. Learn its causes, risks, and treatment options.
What's Causing That Black Line on Your Nail - Healthline
Feb 5, 2024 · This condition occurs due to increased melanin deposits in the nail or changes in the nail pigmentation. Thicker lines that create a horizontal stripe on the nail are called Beau …
Black Line on Nail: Causes and When To Seek Care - Health
Oct 30, 2025 · Melanonychia, a black line on your nail, may be caused by injuries, medication side effects, or a severe condition like melanoma. It's important to get any changes evaluated.
Black Line on the Nail: Causes, Treatments & When to Worry
Jun 17, 2025 · Discover what a black line on the nail could mean—from harmless trauma to serious health concerns like subungual melanoma. Learn the causes, symptoms, treatment …
Black line on the nail: Causes, treatments, and pictures
Apr 24, 2024 · This article discusses the cause of black lines on the nail. It also goes over other symptoms and treatments.
Dark Spot on Toenail? Causes, Treatments, and When to Worry
Jun 25, 2025 · Several factors can contribute to dark spot on toenail, ranging from minor injuries to infections and underlying health conditions. Let’s explore three of the most common causes …
Black Marks On Nails: What Your Body Is Trying To Tell You
Mar 19, 2025 · Melanonychia can be caused by several factors, including pigmentation changes, injury, certain drugs and various health conditions such as HIV and cancer.
What Do Black Fingernails Mean? Causes & When to See a Doctor
Black fingernails can be a cause for concern. While some instances of nail discoloration are harmless and resolve on their own, others can signal a more serious underlying health issue. …
Black Lines on Nails: When to Worry & What To Do Now
Jun 12, 2025 · Black lines on your nails, called melanonychia, are usually either vertical or horizontal. They can be black or brown. Vertical lines are more common, and they’re often …