Blue skin and lips is usually caused by low blood oxygen levels or poor circulation. It can be a sign of a serious problem. Call or go to your nearest emergency department immediately if you notice an adult or child suddenly turning blue. This is usually the result of a less serious problem with blood circulation, but it should still be checked by a doctor. When blood has less oxygen than normal, it changes from bright red to a darker colour, making the skin and lips look blue. Some of the main causes of cyanosis are described below.
You shouldn't use this to diagnose yourself. You should always leave that to your GP. If just the fingers, toes or limbs have turned blue and feel cold, it's known as peripheral cyanosis. It can be caused by being exposed to cold air or water. Other causes include poor circulation resulting from:. For further information see terms and conditions.
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