Quick Answer: How Many Diseases Are There?

What disease killed the most?

Throughout history, there have been a number of pandemics of diseases such as smallpox and tuberculosis.

One of the most devastating pandemics was the Black Death (also known as The Plague), which killed an estimated 75–200 million people in the 14th century..

What are the six diseases?

Childhood mortality: six killer diseases and how to stop themPneumonia. Pneumonia, usually caused by a bacterial infection, is a disease in which the air sacs in the lungs become inflamed and fill up with fluid. … Diarrhoea. Diarrhoea is caused by an infection in the intestinal track. … Malaria. … Meningitis. … HIV. … Measles.

What is the disease where your body shuts down?

Asherson’s syndrome is a severe variant of antiphospholipid syndrome (APS), an autoimmune disorder in which blood clots occur in relation to the presence of antiphospholipid antibodies in the body. Antibodies are specialized proteins produced by the body’s immune system to fight infection.

Do viruses alive?

So were they ever alive? Most biologists say no. Viruses are not made out of cells, they can’t keep themselves in a stable state, they don’t grow, and they can’t make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.

Are viruses living thing?

Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.

Are diseases curable?

The term “cure” means that, after medical treatment, the patient no longer has that particular condition anymore. Some diseases can be cured. Others, like hepatitis B, have no cure. The person will always have the condition, but medical treatments can help to manage the disease.

What diseases are viruses?

Viral diseasessmallpox.the common cold and different types of flu.measles, mumps, rubella, chicken pox, and shingles.hepatitis.herpes and cold sores.polio.rabies.Ebola and Hanta fever.More items…•

How many diseases are there in the world?

There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic diseases and non-genetic hereditary diseases), and physiological diseases.

How many viral diseases are there?

There are many types of viruses that cause a wide variety of viral infections or viral diseases. In fact, there are more than 200 different viruses that can cause a cold or an upper respiratory infection.

What disease kills you slowly?

Huntington’s disease (HD) is a hereditary and progressive brain disorder. You can’t “catch” it from another person. Although symptoms may first show up in midlife, Huntington’s can strike anyone from childhood to advanced age. Over 10 to 25 years, the disease gradually kills nerve cells in the brain.

What is the most difficult disease to diagnose?

Conditions That Are Hard to Diagnose7 / 14. Lyme Disease. … 8 / 14. Fibromyalgia. … 9 / 14. Lupus. … 10 / 14. Parkinson’s Disease. … 11 / 14. Multiple Sclerosis (MS) … 12 / 14. Chronic Fatigue Syndrome. … 13 / 14. Polycystic Ovary Syndrome (PCOS) … 14 / 14. Endometriosis. This happens when the tissue that lines a woman’s uterus grows outside of it.More items…

What are the 10 most common diseases?

Read on to see the top 10 diseases causing the most deaths worldwide, according to the World Health Organization (WHO) .Chronic obstructive pulmonary disease. … Trachea, bronchus, and lung cancers. … Diabetes mellitus. … Alzheimer’s disease and other dementias. … Dehydration due to diarrheal diseases. … Tuberculosis. … Cirrhosis.More items…

What are the 7 diseases?

In the following pages, we present seven infections from the past that still plague us today.Pneumonic/Bubonic Plague. … Spanish and Swine Flu — H1N1. … Polio. … Chagas Disease. … Leprosy. … Hookworm. … Tuberculosis.

What is the most misdiagnosed disease?

Most commonly misdiagnosed medical conditionsStroke. Failure to diagnose stroke quickly can lead to lost opportunity to initiate time-sensitive treatments. … Irritable bowel syndrome. … Carpal tunnel syndrome vs thoracic outlet syndrome. … Systemic lupus erythematosus vs rheumatoid arthritis. … Lyme disease. … Multiple sclerosis.

Do we have viruses in our body?

The human virome is a part of our bodies and will not always cause harm. Many latent and asymptomatic viruses are present in the human body all the time. Viruses infect all life forms; therefore the bacterial, plant, and animal cells and material in our gut also carry viruses.