Other Mucus Colors
Other mucus colors would indicate the presence of some problems related to your lungs and parts of the respiratory system:
– Clear: This is the normal color of mucus. It is comprised of antibodies, salt, water, and other cells of the immune system.
– Brown: This color suggests possible bleeding, which occurred a while ago.
– Pink or bright red mucus indicates recent bleeding.
– Black mucus can be caused by a fungal infection.
– White or cloudy mucus might signal nasal congestion, which inflames the tissues and causes swelling.
– Yellow mucus indicates inflammation in the sinuses when the immune system works. More specifically, white blood cells fight germs and produce this color.
– Green mucus suggests a robust and widespread immune response.
– Red mucus indicates the presence of blood, which can be caused by a serious medical condition. [4]
