Persistent Sore Throat: Causes and Concerns of Blood in Cough - Otolaryngology

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My throat has been hurting a lot?


Recently, I have been experiencing a persistent sore throat.
Initially, there was a sweet-tasting discharge from my throat.
A few days later, I started coughing up a large amount of blood—not just blood streaks, but a significant amount of blood (including saliva).
I would like to know what conditions could cause these symptoms.

T_T, 20~29 year old female. Ask Date: 2014/10/21

Dr. Zheng Jueyi reply Otolaryngology


Hello: Most oral ulcers or blisters may be caused by viral infections or temporary immune abnormalities.
If they recur frequently, it is advisable to seek medical attention to determine the underlying cause and treatment.
Wishing you peace and health.
Sincerely, Dr.
Cheng Jue-Yi, Director of the Department of Otolaryngology, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2014/10/21

More Info


Persistent sore throat accompanied by significant blood in cough is a concerning symptom that warrants immediate medical attention. The presence of a large amount of blood, especially when it is not just blood-tinged but rather a significant volume, can indicate several serious underlying conditions.
Firstly, it is essential to understand that a sore throat can arise from various causes, including viral infections (like the common cold or influenza), bacterial infections (such as strep throat), allergies, or irritants like smoke or pollution. However, when blood is present, it raises the stakes considerably.
One potential cause of a sore throat with significant bleeding could be a severe throat infection, such as bacterial pharyngitis or tonsillitis. In these cases, the inflammation can lead to the rupture of small blood vessels in the throat, resulting in bleeding. Another possibility is a condition known as epistaxis, where bleeding from the nose can trickle down the back of the throat, leading to the appearance of blood when coughing.

More serious conditions must also be considered. For instance, a pulmonary issue such as bronchitis or pneumonia could lead to coughing up blood, especially if there is significant inflammation or infection in the lungs. In rare cases, conditions like tuberculosis or lung cancer can present with similar symptoms, particularly in individuals with risk factors such as smoking or a history of chronic lung disease.

Additionally, if there is a history of trauma to the throat or chest, this could also lead to bleeding. For example, a severe cough could cause a rupture in the blood vessels of the throat or lungs, leading to hemoptysis (coughing up blood).
Given the severity of your symptoms—persistent sore throat and significant blood in your cough—it is crucial to seek medical attention immediately. A healthcare provider will likely perform a thorough examination, which may include a physical exam, imaging studies like a chest X-ray, and possibly a bronchoscopy to visualize the airways directly. Blood tests may also be conducted to rule out infections or other underlying conditions.

In summary, while a sore throat can be caused by many benign conditions, the presence of significant blood in your cough is alarming and should not be ignored. It is essential to consult with a healthcare professional as soon as possible to determine the underlying cause and receive appropriate treatment. Early intervention can be critical in managing any serious health issues effectively.

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