By A Mystery Man Writer
When there isn’t enough oxygen in your blood, the skin or membrane below the skin turns a purplish-blue color. Learn more about possible causes.
A lack or low level of circulating oxygen in your red blood cells causes blue fingernails. Learn more here.
Blue Fingernails: Causes and When to Get Help
Fingers Nails Reliable Reputation
What is Longitudinal Ridging?
Are blue fingernails a sign of dehydration? - Quora
BLUE HANDS - 本
Blue discoloration of the skin - UF Health
Green Nail Syndrome - American Osteopathic College of Dermatology (AOCD)
690+ Blue Nails Stock Photos, Pictures & Royalty-Free Images - iStock
Nail psoriasis: Definition, treatment, and home remedies
Blue nails/purple hands when cold - Raynaud's? : r/Raynauds
What do light blue nails mean and what do they say about relationships?
What causes nails to turn blue and when should we be concerned about it? - Quora