Your lips, tongue, gums, ears, nails, and skin may turn blue too; this can appear grey on darker skin tones. In cases of cyanosis, your skin will usually be at a normal temperature.

Blue lips are most often caused when something is preventing you from getting enough oxygen into your body. Read on to discover some of the causes of blue lips including asthma, carbon monoxide ...

Blue lips can indicate a medical emergency. A person can learn more about the potential causes of blue lips and when to seek help, here.

Your lips, tongue, gums, ears, nails, and skin may turn blue too; this can appear grey on darker skin tones. In cases of cyanosis, your skin will usually be at a normal temperature.