Spoon Nails (Koilonychia): Causes, Iron Link, and What to Do
Spoon nails curve inward like a spoon and are often a sign of iron deficiency. Learn the causes, the iron connection, and when to see a doctor.
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Pale Nails: What They Mean, Causes, and When to See a Doctor
Pale or white nails can signal low iron, or less often liver, kidney, or heart conditions. Learn the patterns, what they mean, and when to see a doctor.
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Black Toenail from Injury: Bruise, Healing, and When to See a Doctor
A black toenail after running or stubbing is usually a bruise under the nail. Learn how it heals, how to tell it from melanoma, and when to see a doctor.
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Black Line on Nail: What It Means, Causes, and When to See a Doctor
A black line on a nail is usually harmless pigment. Learn the common causes, warning signs, and when a dermatologist visit is the right call.
