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In epidemiology, environmental diseases are diseases that can be directly attributed to environmental factors (as distinct from genetic factors or infection). Apart from the true monogenic genetic disorders , which are rare, environment is a major determinant of the development of disease.
Facial trauma may affect the eyes, nose, ears, or mouth. Nasal trauma is a common injury and the most common type of facial injury. [38] Oral injuries are typically caused by traffic accidents or alcohol-related violence, though falls are a more common cause in young children.
Climate change is altering the geographic range and seasonality of some insects that can carry diseases, for example Aedes aegypti, the mosquito that is the vector for dengue transmission. Global climate change has increased the occurrence of some infectious diseases. Infectious diseases whose transmission is impacted by climate change include, for example, vector-borne diseases like dengue ...
One of the ways to prevent or slow down the transmission of infectious diseases is to recognize the different characteristics of various diseases. [71] Some critical disease characteristics that should be evaluated include virulence , distance traveled by those affected, and level of contagiousness.
Radiation and chemotherapy can lead to brain tissue damage by disrupting or stopping blood flow to the affected areas of the brain. This damage can cause long term effects such as but not limited to; memory loss, confusion, and loss of cognitive function. The brain damage caused by radiation depends on where the brain tumor is located, the ...
Alternatively, diseases may be classified according to the organ system involved, though this is often complicated since many diseases affect more than one organ. A chief difficulty in nosology is that diseases often cannot be defined and classified clearly, especially when cause or pathogenesis are unknown.
You may have heard warnings about how alcohol can damage the liver, but it can also affect organs throughout your entire body.And it starts as soon as you take a sip. “Alcohol is first absorbed ...
Mental illnesses were well known in ancient Mesopotamia, [152] where diseases and mental disorders were believed to be caused by specific deities. [153] Because hands symbolized control over a person, mental illnesses were known as "hands" of certain deities. [153] One psychological illness was known as Qāt Ištar, meaning "Hand of Ishtar". [153]