Fever is one of the body's defence mechanisms. When bacteria or viruses get into your body and cause it to malfunction, the body goes on the defensive and your immune system is activated.
When this happens, a central nerve in the brain allows the heat generated inside the body to be turned up from the usually constant level. This higher temperature level increases the metabolism and prevents the increase of pathogenic agents. A person has a fever if their body temperature rises above the normal range of 36 - 37°C (98 - 100°F). It´s a common sign of an infection.
Normal body temperature (normothermia, euthermia) is the typical temperature range found in humans. The normal body temperature range is typically stated as 36.5 - 37°C.
The body temperature varies. It depends on gender, age, time of day, exertion level, health status (such as illness and menstruation), what part of the body the measurement is taken at, state of consciousness (waking, sleeping, sedated), and emotions. Body temperature is kept in the normal range by thermoregulation, in which adjustment of temperature is triggered by the central nervous system.
The number of adults aged 30–79 years with hypertension has increased from 650 million to 1.28 billion in the last thirty years, according to the first comprehensive global analysis of trends in hypertension prevalence, detection, treatment and control, led by Imperial College London and WHO, and published on August 25, 2021 in The Lancet.
Nearly half these people did not know they had hypertension. Hypertension significantly increases the risk of heart, brain and kidney diseases, and is one of the top causes of death and disease throughout the world.
Preeclampsia is a serious blood pressure condition that can happen after the 20th week of pregnancy or after giving birth (called postpartum pre-eclampsia). It's when a woman has high blood pressure and signs that some of her organs, like her kidneys and liver, may not be working normally.
Pre-eclampsia is a serious health problem for pregnant women around the world. It affects 2 to 8 percent of pregnancies worldwide.
Cerebral infarction refers to permanent damage to brain tissue caused by defective blood flow, or ischemia. The cause of a cerebral infarction, or cerebrovascular accident, is a blockage of the cerebral arteries.
Most often, the cause is a clot from the heart or carotid artery. A stroke often strikes completely unexpectedly. Symptoms usually peak quickly, within minutes. Less often, it takes hours for symptoms to develop.