Blue Fingernails: Causes and When to Get Help - Healthline
Jun 3, 2025 · Having a blue tint to your fingernails is a condition known as cyanosis. It occurs when there isn’t enough oxygen in your blood, making the skin or membrane below the skin turn a purplish …
The causes of blue nails and when to seek help - Medical News Today
Oct 22, 2025 · Many different conditions can cause blue nails, or cyanosis. Learn about how doctors diagnose and treat cyanosis and when an individual should seek help.
Causes of Blue or Purple Fingernails - Verywell Health
Jun 28, 2025 · Blue or purple fingernails indicates low oxygen levels, often due to conditions such as heart and lung disorders. Learn why it happens and when to seek help.
Cyanosis (Blue Hands & Feet): Causes, Treatment & Diagnosis
Oct 17, 2022 · Cyanosis is the medical term for when your skin, lips or nails turn blue due to a lack of oxygen in your blood.
Cyanosis (Blue Fingernails): Causes and Treatment - Health
Dec 19, 2025 · Cyanosis (blue fingernails) happens due to a lack of oxygen in the blood. It's often caused by an underlying medical condition affecting your oxygen levels.
Why are my fingernails suddenly purple or blue?
Jul 9, 2025 · Purple or blue fingernails usually mean your blood is not delivering enough oxygen to the fingertips—a problem doctors call peripheral cyanosis. Cold exposure, poor circulation, heart or lung …
Why Are My Fingernails Blue? Causes and When to Worry
Dec 7, 2025 · Recognizing When Blue Nails Are an Emergency While many causes of blue nails are benign or manageable, the discoloration can be a sign of a life-threatening medical event requiring …
Blue Nail Beds (Cyanosis): Identifying Nail Discoloration and When to
Jan 8, 2026 · Blue or purple nail beds, known as cyanosis, can signal low oxygen or circulation changes. Learn what blue fingernails mean, common causes, hospice cyanosis, and when to call the care team.
Blue nail beds: When to be concerned - Norton Healthcare
Jan 12, 2023 · Fingernails are good for scratching itches, but they are also a window into your health. If the skin under your fingernails has a blue or purple tinge, you might need to see a health care …
Nails becoming blue in winter? Doctor shares why it can be …
2 hours ago · Nails becoming blue in winter? Doctor shares why and when it can be concerning Timely doctor visits are crucial for identifying health issues. Bluish nails may indicate poor circulation or ...