Why do my lips turn purple in winter, and when the weather is colder? ...

Suggestion: Hello, regarding the condition of your lips, I think it is cold weather and cold stimulation that causes the blood circulation of your lips to turn black. Eat more fruits and vegetables, exercise properly and develop good hygiene habits. If you have any questions, you can ask me. I wish you a speedy recovery. If you are satisfied with the above answers, please click "Adopt as Answer". Disease analysis: hello, it may be that the weather is cold or the lips are purple, which is a sign of lack of oxygen. It is necessary to further examine the heart and lungs, especially to rule out the possibility of congenital heart disease.