3 doctors weighed in:

What causes blood spot in phlegm?

3 doctors weighed in
Dr. Charles Glassman
Internal Medicine
2 doctors agree

In brief: Blood in phlegm

The most common origin of blood in phlegm is the nasal cavity including the sinuses.
Dry, chaffed mucous membranes can bleed and this drips down the back of the throat and comes up with the phlegm.It can also come from bleeding gums or other sources in the mouth.Infrequently, it might arise from the stomach or lungs. If it persists, increases in frequency, duration or severity have it checked out.

In brief: Blood in phlegm

The most common origin of blood in phlegm is the nasal cavity including the sinuses.
Dry, chaffed mucous membranes can bleed and this drips down the back of the throat and comes up with the phlegm.It can also come from bleeding gums or other sources in the mouth.Infrequently, it might arise from the stomach or lungs. If it persists, increases in frequency, duration or severity have it checked out.
Dr. Charles Glassman
Dr. Charles Glassman
Thank
Get help from a real doctor now
Dr. Aaron Milstone
Board Certified, Internal Medicine - Pulmonology
23 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors