Diseases and conditions

This sections offers information on many diseases and conditions, including symptoms and treatments. Because healthy lifestyle choices reduce the risk of many diseases, this section provides tips on the choices you can make to stay healthy.

In this topic


Asthma is a chronic lung disease that can be fatal. With the right information, treatment and support, most people with asthma can control their symptoms and lead active, healthy lives.

Autism Spectrum Disorders (ASD)

Autism Spectrum Disorder (ASD) is a term used to describe a group of developmental disorders that include Autism, Asperger Syndrome, Pervasive Developmental Disorders (PDD), Rett's disorder and Childhood Disintegrative Disorder (CDD).

The Canadian Diabetes Risk Questionnaire

Diabetes: Are you at risk?

C. difficile (Clostridium difficile)

Clostridium difficile, commonly called C. difficile, is a bacterium that causes diarrhea and other serious intestinal conditions. It is the most common cause of infectious diarrhea in hospitalized patients in the industrialized world.

Flesh-eating disease

Flesh-eating disease is the common name for necrotizing fasciitis (nek-roe-tie-zing fah-shee-eye-tis), an infection that works its way rapidly through the layers of tissue (the fascia) that surround muscles.


HIV is a virus that attacks the immune system, resulting in a chronic, progressive illness that leaves people vulnerable to infections. When the body can no longer fight infection, the disease has progressed to become AIDS.

Heart Disease – Heart Health

Heart disease is still one of the leading causes of death for Canadian men and women. You can reduce your risk of developing heart disease by understanding the risk factors that cause it, and by making the necessary changes to your lifestyle.

Hepatitis C

Hepatitis C is a chronic liver disease caused by the hepatitis C virus (HCV). Because many people do not have symptoms when they are infected, it is important for those at risk to take action to avoid infecting others.

Legionnaires' Disease and Pontiac Fever

Legionellosis is an infection caused by a type of bacteria called Legionella. It can lead to two distinct illnesses: Legionnaires’ disease and Pontiac fever. Legionella bacteria are found in stagnant water sources at certain temperatures.

Mental health - mental illness

Most Canadians are affected by mental illness, either directly or indirectly, through family, friends or colleagues. Mental illnesses take many forms, including: mood, anxiety personality, and eating disorders and schizophrenia.

Seasonal flu

Protect yourself, your family and your community - Seasonal influenza (flu) is a common infection of the airways and lungs that can spread easily among people.

Skin cancer

Skin cancer is the most common of all cancer types. About one third of all new cases of cancer in Canada are skin cancers, and the rate continues to rise. Skin plays a vital role in keeping you healthy.


Even though tuberculosis can be cured with antibiotics, it continues to be a major health problem that kills almost two million people worldwide every year.

Type 2 diabetes

Diabetes is a lifelong condition where either your body does not produce enough insulin, or cannot use the insulin it produces. It is one of the fastest growing diseases in Canada.

West Nile virus

Your chance of being bitten by a mosquito that can spread West Nile virus is small. However, if there are reports of infected mosquitoes in your area, take extra steps to protect yourself from mosquito bites.

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