What Causes

A pulmonary embolism is usually caused by a blood clot travelling up to your lungs from one of the deep veins in your body. A deep vein is a larger vein that is ... Hidradenitis suppurativa (HS)--a rather common, very chronic and debilitating inflammatory skin appendage disorder with a notoriously underestimated burden of ... We test Marshall's theories of industrial agglomeration by examining which industries locate near one another, or coagglomerate. They believe that a mix of factors trigger MS. Studies support the idea that a trigger in the environment may cause MS in certain people who have a specific ... Smoking is often a leading cause of bladder cancer, as it introduces toxins into the bladder, while exposure to certain chemicals at work is another potential ... TOTs occur when the connections between lexical and phonological nodes become weakened due to infrequent use, nonrecent use, and aging. Jun 10, 2021 ... The natural light show starts when disturbances on the sun pull on Earth's magnetic field. That creates cosmic undulations known as Alfvén waves. The short answer: Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. Two conditions must coexist to cause platypnea-orthodeoxia: an anatomical component in the form of an interatrial communication and a functional component that ... The following list are some meteorological conditions that can lead to frost conditions: Cool temperatures, with some moisture, that promote ice crystal ...