Noticed ridges on your fingernails? In most cases, there’s no reason to worry. Vertical ridges—the most common type—are usually harmless and linked to natural aging, dry nails, frequent handwashing, or minor everyday trauma. They’re a normal part of nail growth for many people.
Horizontal ridges, however, can sometimes signal stress, illness, or a temporary disruption in nail growth and may be worth checking with a doctor if they’re deep or sudden. For smoother nails, focus on hydration, moisturizing cuticles, protecting hands, and gentle nail care. Bottom line: nail ridges are extremely common, and most simply reflect dryness, age, and daily use—not a serious health problem.