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What causes stridor? 14 possible conditions

Stridor is a high-pitched, wheezing sound caused by disrupted airflow. Airflow is usually disrupted by a blockage in the larynx (voice box) or trachea (windpipe). It’s most noticeable when breathing in, though it can sometimes be heard when breathing out.... Read more

See a list of possible causes in order from the most common to the least.

1

Choking Adult Or Child Over 1 Year

This condition is considered a medical emergency. Urgent care may be required.

Choking occurs when a piece of food, an object, or a liquid becomes lodged in the throat. Children often choke as a result of placing foreign objects into their mouths. Adults normally choke due to breathing in fumes o...

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2

Diphtheria

Diphtheria is a bacterial infection that affects the throat and nose. Find information on diphtheria symptoms, causes, treatment, and prevention.

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3

Anaphylaxis

This condition is considered a medical emergency. Urgent care may be required.

Anaphylaxis can occur when you have a severe reaction to certain allergens. Learn what the symptoms are and what to do if this happens.

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4

Epiglottitis

This condition is considered a medical emergency. Urgent care may be required.

Epiglottitis is characterized by inflamed tissue in your epiglottis. It's a potentially life-threatening illness. The epiglottis is at the base of the tongue.

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5

Lung Cancer Overview

There are two main types of lung cancer: non-small cell and small-cell. Learn about how these lung cancers are caused, your treatment options, and more.

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6

Angioedema (Giant Hives)

Angioedema is severe swelling beneath the skin. Sometimes the swelling is accompanied by hives. Learn about angioedema symptoms, causes, and treatment.

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7

Tonsillitis

Tonsillitis can occur at any age and is a common childhood ailment. It is most often diagnosed in children from preschool age through their midteens.

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8

Laryngitis

Laryngitis is when your voice box or vocal cords become inflamed from overuse, irritation, or infection. It comes in both acute and chronic forms.

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9

Deviated Septum

A deviated septum may cause health complications such as difficulty breathing. Learn more about the causes, symptoms, treatments, and more.

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10

Croup

Croup is a viral condition that causes swelling around the vocal cords. It's most active in the fall and winter months and targets children under the age of 5.

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11

Small Cell Lung Cancer

Small cell lung cancer is a very aggressive form of lung cancer. Learn about small cell lung cancer symptoms, risk factors, diagnosis, and treatment.

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12

Chemical Burns

This condition is considered a medical emergency. Urgent care may be required.

Find information about chemical burns and how to prevent them. Learn about the causes, symptoms, and treatment of chemical burns.

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13

Non-Small Cell Lung Cancer

Non-small cell lung cancer (NSCLC) is the most common type of lung cancer. Swelling of the face is one potential sign of lung cancer.

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14

Transfusion Reactions

A transfusion reaction is when your body has an adverse response to a blood transfusion. Learn how transfusion reactions occur and how to minimize your risk.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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