The harmful changes that may occur in the human body or any part of it and affects the functions, structure and appearance are what are known as diseases. These conditions can be a result of various associated problems and situations. Many of the problems causes are like the conditions in relation to the economy, wars and natural disasters. An outbreak of a disease can be very detrimental by far to the people in general, worse than any man-made or natural calamity.
If there was to be an outbreak of a certain epidemic, in particular one caused by a virus, containing this virus would be very difficult because of the virus ability to clone itself and mutate to another strain very quickly. This will have very bad and very large effects. A good example is the outbreak of influenza in the year 1918 which killed 20 to 50 million people in the world. A few months thereafter, half a million people died America from the Spanish flu.
The causes of diseases are different and can be categorized into two major groups. There are the infectious diseases and noninfectious diseases. The infectious diseases are the types of diseases which can be able to spread from an individual to another and they are mainly brought about by microscopic organisms which attack the body. The noninfectious diseases cannot be communicated from a person to another and they do not have any infectious agent, or at least they have not yet been established.
The common cold, for example, is a disease that is acute and can appear suddenly and is able to last for a few weeks. Another disease like arthritis, for instance, is a chronic ailment meaning it is able to persist for months and years on. There are others that have been known to have certain body effects that make them identifiable and characteristic. The effects are what are referred to as the signs and symptoms. Fatigue, fever, rashes, inflammation, nausea, dizziness and pain are some of the characteristics.
The symptoms are used to tell the professionals in health-care and physicians what the condition is so that they may be able to make a diagnosis. On the other hand, the symptoms at times point out a few possible disorders. In a case such as this, the doctor needs to rely on medical tests like X-rays and blood tests to ascertain the diagnosis. The treatment that an individual and the individual him or her self will determine which cause the disease will take.
If there was to be an outbreak of a certain epidemic, in particular one caused by a virus, containing this virus would be very difficult because of the virus ability to clone itself and mutate to another strain very quickly. This will have very bad and very large effects. A good example is the outbreak of influenza in the year 1918 which killed 20 to 50 million people in the world. A few months thereafter, half a million people died America from the Spanish flu.
The causes of diseases are different and can be categorized into two major groups. There are the infectious diseases and noninfectious diseases. The infectious diseases are the types of diseases which can be able to spread from an individual to another and they are mainly brought about by microscopic organisms which attack the body. The noninfectious diseases cannot be communicated from a person to another and they do not have any infectious agent, or at least they have not yet been established.
The common cold, for example, is a disease that is acute and can appear suddenly and is able to last for a few weeks. Another disease like arthritis, for instance, is a chronic ailment meaning it is able to persist for months and years on. There are others that have been known to have certain body effects that make them identifiable and characteristic. The effects are what are referred to as the signs and symptoms. Fatigue, fever, rashes, inflammation, nausea, dizziness and pain are some of the characteristics.
The symptoms are used to tell the professionals in health-care and physicians what the condition is so that they may be able to make a diagnosis. On the other hand, the symptoms at times point out a few possible disorders. In a case such as this, the doctor needs to rely on medical tests like X-rays and blood tests to ascertain the diagnosis. The treatment that an individual and the individual him or her self will determine which cause the disease will take.
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