12 Surprising Causes of Spoon-Shaped Nails (Koilonychia)

Lisette Marie

7. Raynaud’s Disease

Raynaud’s disease. Photo Credit: Wikimedia Commons @Intermedichbo

Raynaud’s disease, a condition characterized by reduced blood flow to extremities due to blood vessel spasms, can lead to koilonychia. This condition commonly affects the fingers and toes, causing them to turn white or blue when exposed to cold temperatures or stress. Chronic episodes of restricted blood flow deprive the nail beds of oxygen and essential nutrients, potentially leading to spoon-shaped nails. Individuals with Raynaud’s may notice other symptoms like numbness, tingling, and a cold sensation in their extremities. Addressing the underlying vascular issues through lifestyle changes or medications to improve circulation can help reduce the likelihood of developing nail abnormalities.

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7. Raynaud’s Disease

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