Chills, Fever, Shortness of breath: 20 Possible Causes
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What causes chills, fever and shortness of breath? 20 possible conditions

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


Cold and Flu Overview

Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared symptoms include headache, cough, sore throat, and more.

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Pneumonia is an infection of the lungs caused by fungi, bacteria, or viruses. General symptoms include chest pain, fever, cough, and difficulty breathing.

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Swine Flu

Swine flu, or H1N1, is highly contagious and can spread quickly from person to person. A simple sneeze may cause thousands of germs to spread through the air. Symptoms are similar to regular influenza.

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The Atypical Facts About Atypical Pneumonia

Pneumonia is an infection that causes inflammation of the lungs. Atypical pneumonia is a kind that isn't caused by the bacteria that causes typical pneumonia.

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Chronic Bronchitis

Learn about the causes and treatment of acute bronchitis.

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Infectious Mononucleosis

Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).

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Tuberculosis (TB) is a highly infectious disease that primarily affects the lungs. Read more on whom it affects and how to treat it.

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Septic Shock

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

Septic shock is a complication of an infection. It can cause inflammation and could become life-threatening.

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An empyema is a condition in which pus collects in the pleural space, which is the area between your lungs and the inner surface of your chest wall.

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Legionnaires' Disease

Legionnaires' disease is a severe type of pneumonia, or lung infection. Learn about its symptoms, causes, treatment, and prevention.

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Cystic Fibrosis

Cystic fibrosis causes severe damage to the respiratory and digestive systems. Learn about its symptoms, causes, diagnosis, and treatment.

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Histoplasmosis is a type of lung infection. It is caused by inhaling fungal spores. Spores are found in soil and in the droppings of bats and birds.

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

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Parrot Fever (Psittacosis)

Parrot fever is an infection caused by a specific type of bacteria called Chlamydia psittaci. In most cases, humans catch parrot fever from birds, including parrots, chickens, turkeys, pigeons, cockatiels, parakeets...

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SARS (Severe Acute Respiratory Syndrome)

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

Severe acute respiratory syndrome (SARS) is a serious form of viral pneumonia. The virus that causes SARS was first identified in 2003.

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Valley Fever (Coccidioidomycosis)

Valley fever is an infection caused by the Coccidioides fungus. Learn about valley fever symptoms, causes, treatment, prevention, and more.

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The Plague

The plague is a serious bacterial infection that can be deadly. It's caused by poor sanitation, overcrowding, and large rodent populations.

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Adrenergic Bronchodilators Overdose

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

An adrenergic bronchodilators overdose is when you take too much of a certain kind of asthma medication.

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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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Chronic Myelogenous Leukemia (CML)

Leukemia is a type of cancer that starts in the blood or blood-forming tissues. There are many different types of leukemia, and treatment is different for each one. Chronic leukemias are slower growing than acut...

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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.