Sputum: Definition, colors, causes, and when to see a doctor
![](https://i0.wp.com/post.medicalnewstoday.com/wp-content/uploads/sites/3/2022/09/1852241-Reasons-for-coughing-up-phlegm-without-feeling-ill4_1296x728-body_1296x728-body-1024x575.png?w=1155&h=1528)
Sputum is a type of thick mucus produced by the lungs. This article explains the types of sputum, what causes changes, and when to speak with a doctor.
![](https://www.verywellhealth.com/thmb/LACf2Gmp5as-6jJECABjSpRZi9Q=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/what-does-it-mean-when-i-have-green-or-yellow-mucus-4019063-Final-69229620324b4b54bdf3d38896c7cd6d.gif)
Yellow or Green Snot and Phlegm: What Mucus Color Means
![](https://asthmabhawan.com/wp-content/uploads/2022/09/What-are-Mucus-and-Phlegm-What-does-the-meaning-of-Snot-color.jpg)
What are Mucus and Phlegm? Meaning of Snot Color
![](http://www.respiratoryupdate.com/wp-content/uploads/2019/11/sputum_-characteristics-causes-prevention.jpg)
Sputum: Characteristics, Causes, Prevention
Rusty Whites, What position did Rusty Kuntz play? Rusty Kuntz was
![](https://scx2.b-cdn.net/gfx/news/hires/2023/color-of-phlegm-can-pr-1.jpg)
Color of phlegm can predict outcomes for patients with the lung
![](https://i.ytimg.com/vi/BRS8HLNXEPc/mqdefault.jpg)
Sputum: Definition, Colors, Causes, and Conditions (2024)
![](https://ars.els-cdn.com/content/image/3-s2.0-B9780123740014000420-gr1.jpg)
Sputum - an overview ScienceDirect Topics
Coughing Up Blood: Causes and When To Seek Care
![](https://cdn.shopify.com/s/files/1/0132/6854/9696/files/Phlegm_Color_Meaning_mutant_green_hulk_480x480.jpg?v=1673263109)
Phlegm Color Meaning: the Ultimate Guide, Cough Coloured Phlegms Read
![](https://www.netmeds.com/images/cms/wysiwyg/blog/2023/06/1687226881_four-temperaments_898x450.jpg)
Coughing Up Green Phlegm: Causes, and Treatment. Does It Indicate
![](https://i.pinimg.com/originals/2f/58/f0/2f58f05c20c4e7c469c204ce8f54c5fc.jpg)
Difference between Parallel Projection and Perspective Projection
![](https://i0.wp.com/post.medicalnewstoday.com/wp-content/uploads/sites/3/2022/09/blood-phlegm-tissue-box-header-1024x575.png?w=1155&h=1528)
Blood in phlegm: Causes, diagnosis, and when to see a doctor
What the Color of Your Mucus Means, From Green to Black
![](https://i.pinimg.com/236x/ee/5d/35/ee5d35ad28e6b78e344c46d0b325ba05.jpg)
470 Biology ideas in 2024 medical school studying, medical