Normally the lining of the respiratory system organs is coated by a small amount of clear mucus that is necessary to keep all tissues moisturized and protected from dust, allergens and environmental toxins.
As a response to a viral or bacterial infection, excessive mucus is being produced to trap and neutralize foreign particles. Respiratory system passages become swollen and filled with nasal and throat mucus that causes significant congestion and a sense of fullness. Normally clear mucus starts getting thick, abundant in nature and turns colors.
The color of phlegm can vary from opaque to black depending on the cause of irritation or infection. Brown phlegm could be the result of heavy smoking that causes chronic irritation of bronchi and lung passages leading to bouts of persistent cough and smoke particles being inhaled into the lungs. Bloody phlegm is a dangerous sign of a potentially deadly illness like lung cancer or tuberculoses that requires immediate doctor’s attention.
Black mucus can take its color from environmental pollutants, hazardous work conditions and many other factors.
If you’ve been digging in the garden or sorting things in a dusty attic, you might notice some black dust or dirt being mixed with your normal mucus. Black mucus could also be present in the respiratory passages of people working in coal mines, automobile manufacturing plants, and road construction industry. This could lead to a dangerous black mucus disease called pneumoconiosis. Putting on protective breathing gear might ward off developing black mucus in the long run.
The most dangerous cause of experiencing black mucus is a pneumonia triggered by fungal organisms. These are very rare and mostly affect gravely ill individuals with weakened immune systems.
Another rather surprising reason for black mucus drainage is foreign objects that could be accidentally pushed into the noses of small children like black crayons, dirt or other pieces.
It’s very important to investigate the actual cause of developing black mucus and undergo the appropriate treatment.