Check out a doctor,don't rely on advice on #Nostr. Peripheral cyanosis is when your hands, fingertips, or feet turn blue due to a lack of oxygen-rich blood. Some causes include Raynaud's disease, cardiovascular problems, and hypothermia. All organs and tissues need oxygen to function. A person's body absorbs oxygen from the air that they breathe.

It's important to find out the cause because it may need quick treatment to prevent permanent injury.

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