If warning signs are present, do not drive if you feel weak or dizzy. Ask a family member for help or call for emergency assistance. When in doubt, prioritize safety. A timely evaluation is almost always the best decision.
Why Am I Coughing Up Blood?
Blood that appears when coughing is medically described as hemoptysis when it originates from the respiratory tract (nose, throat, trachea, bronchi, or lungs). It can be related to irritation from intense coughing, inflammation from an infection, or other conditions, all of which can only be differentiated through clinical history, physical examination, and, when needed, diagnostic studies. For this reason, coughing up blood is not a diagnosis, it is a symptom that must be evaluated by a healthcare professional.
If you are coughing up blood, avoid trying to identify the cause on your own. The best approach is to start gathering useful information to bring to a medical evaluation with a pulmonologist. If you identify any warning signs, chest pain, shortness of breath, high fever, or recurring bleeding, go to the emergency room immediately.
Where Does the Blood Come From?
Not all blood that appears “when coughing” comes from the lungs. It can also originate from the nose or throat, or less commonly from the digestive tract. To help guide the evaluation and diagnosis, take note of the color of the blood, the amount being expelled, and the context in which it appeared, whether you vomited, have had nasal congestion, throat clearing, or phlegm. This information can help your physician identify the possible source, such as pulmonary, digestive, or upper airway, among others.
Possible Causes of Coughing Up Blood
Keep in mind that only a physician can confirm the cause. That said, understanding the most common scenarios can help you recognize why this is happening and why a medical evaluation is so important.
Infections and Inflammation
Respiratory infections can inflame and weaken the lining of the bronchi and throat. In some cases, a cough can be intense enough to produce blood-streaked phlegm. More serious infections, such as pneumonia, can also cause this and are typically accompanied by fever, chest pain, or shortness of breath.
Irritation or Trauma from Intense Coughing or Dryness
After hours or days of coughing, the mucous membrane can become irritated and bleed in small amounts. This typically appears as thin red streaks or small spots, especially after a severe coughing episode. While this can be benign, it should not be ignored if:
- It recurs.
- The amount of blood increases.
- It is accompanied by warning signs.
Chronic Lung Disease
Conditions such as COPD or bronchiectasis (among others) can be associated with chronic cough and, in some cases, hemoptysis. The key here is not self-diagnosis, it is understanding that if an underlying lung disease already exists, any episode of blood when coughing warrants prompt evaluation.
Tumors / Lung Cancer
This topic often generates significant anxiety. It is important to be direct: coughing up blood does not automatically mean cancer, but it is a possibility that must be ruled out when risk factors are present (significant tobacco use, age, unintentional weight loss, a persistent cough that has changed in character, among others) or when warning signs exist. In that context, a physician can order appropriate tests and referrals. At ABC Medical Center, oncological management is multidisciplinary when required.
Vascular / Thromboembolic Causes — Less Common but More Serious
Less frequent but potentially life-threatening causes include pulmonary embolism (blood clots). These typically present with shortness of breath, chest pain, rapid heart rate, or severe discomfort and require urgent evaluation.
A note on neurological involvement: Certain complex vascular conditions can present with neurological symptoms in specific circumstances. If coughing up blood occurs alongside sudden neurological symptoms (weakness on one side, difficulty speaking, confusion, or an unusual headache), this is a medical emergency, as it may indicate an arteriovenous fistula.
Medications and Coagulation Disorders
If you are taking anticoagulants or antiplatelet medications or have a clotting disorder, the clinical picture changes, bleeding may occur more easily, and the threshold for emergency evaluation is lower. If you are on these medications, do not stop them on your own. Seek medical care or go to the emergency room if there is significant bleeding or any warning signs are present.
What to Do If You Are Coughing Up Blood
Safe Actions
- Stay calm and sit upright: Avoid lying completely flat if you continue to cough.
- Observe and document: Estimate the approximate amount of blood, whether it is mixed with phlegm, whether there are clots, and how many times it has occurred. If helpful, take a photo of the sputum to show your physician. This can save time and reduce confusion.
- Hydration and environment: Drinking water and avoiding smoke or other irritants can help reduce irritation while you seek medical care.
- If you suspect nasal bleeding: If you experience dryness or a nosebleed, consider that blood may have dripped back into the throat. Stay seated, avoid blowing your nose forcefully, and watch for any recurrence of bleeding.
For your safety, avoid these 3 actions if you are coughing up blood
- Do not self-medicate “just in case,” especially with antibiotics or medications that were not specifically prescribed for this.
- Do not rely on home remedies as a definitive solution when coughing up blood or when a cough is prolonged. “If a cough is accompanied by blood-tinged phlegm, home remedies are the least advisable substitute for proper medical care,” advises Dr. Blanca Patricia Herrera Amaro, Pulmonologist at ABC Medical Center.
- Do not stop anticoagulants without medical guidance (unless specifically instructed to do so by an emergency care team after evaluating you).
Which Specialist Treats Coughing Up Blood?
The specialist most commonly involved in evaluating hemoptysis is the pulmonologist, a physician focused on the diagnosis and treatment of diseases of the respiratory system, from the nose to the lungs. Depending on your situation and the urgency of your symptoms, here are the appropriate options:
- If it is urgent: Go to the ABC Medical Center Emergency Unit, available 24/7 at the Santa Fe and Observatorio locations in Mexico City.
- If it can be scheduled: You can search for a specialist in the Pulmonology directory.
If you would like an initial medical assessment and, if needed, a rapid referral to emergency services within the same medical center, ConsultABC is available every day.
Fuentes:
- https://medlineplus.gov/spanish/ency/article/003073.htm
- https://www.msdmanuals.com/es/professional/trastornos-pulmonares/s%C3%ADntomas-de-los-trastornos-pulmonares/hemoptisis
- https://www.msdmanuals.com/es/hogar/trastornos-del-pulm%C3%B3n-y-las-v%C3%ADas-respiratorias/s%C3%ADntomas-de-los-trastornos-pulmonares/tos-con-sangre-hemoptisis
