Skin, blue
If a person's skin or lips turn blue, it's usually caused by low blood oxygen levels or poor circulation. It can be a sign of a serious problem, so it's important to seek medical advice.
Call 999 or go to your nearest hospital emergency department (A&E) immediately if you notice an adult or child suddenly turning blue, particularly if they have other symptoms, such as Shortness o
Some of the maincauses of cyanosis are described below, but you shouldn't use this to diagnose yourself always leave that to a doctor. Cyanosis that just affects the hands, feet or limbs If just the