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May 17, 2024 · Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful, but some organisms under certain conditions may cause disease.
Jan 22, 2020 · Parkinson's disease is a progressive disorder of the nervous system that affects movement. It develops gradually, sometimes starting with a barely noticeable tremor in just one hand. But while a tremor may be the most well-known sign of Parkinson's disease, the disorder also commonly causes stiffness or slowing of movement.
Dec 30, 2019 · Pneumonia is an infection that inflames the air sacs in one or both lungs, and can range in seriousness from mild to life-threatening. Pneumonia can affect anyone, but the age groups at highest risk are children younger than age 2 and people older than age 65.
Nov 29, 2016 · Chronic obstructive pulmonary disease, or COPD, is a collection of serious lung diseases that obstructs airflow from the lungs and causes breathing issues. Emphysema and chronic bronchitis are the conditions that most commonly contribute to COPD.
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May 18, 2020 · In 80% of people, COVID-19 causes mild to moderate illness. In 14–15% of people, the disease is severe enough that these people need to be admitted to the hospital. About 5–6% of people get critically ill, needing ICU level of care.
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