Coughing up blood, medically known as hemoptysis, involves coughing or spitting up blood or blood-streaked mucus from your respiratory tract (i.e. lungs and airways). Coughed-up blood may appear ...

If you’re sick with a cold and constantly coughing up phlegm ... “People often think that if their phlegm is thick, colored, smells bad or has blood in it that these are signs to worry ...

Post-nasal drip occurs when excess mucus accumulates in the back of the throat or nose, primarily due to allergies, infections, or irritants. Symptoms ...