extremely high core temperature of up to
hot, red, dry skin
rapid, shallow breathing
confusion, strange behaviour
possible loss of consciousness
Someone with heat stroke has stopped
sweating, due to a failure in his or her heat
High core temperatures damage the
internal organs, especially the brain. The
fluid loss can also produce dangerously
low blood pressure. Most people who are
killed by heat stroke die when their heart
stops pumping effectively (circulatory
failure). Even people who survive are likely
to have permanent brain damage if their
core temperature has been over
40.6°C (105°F) for more than an hour or
sunstroke, thermic fever, or
siriasis. It happens when the body's
mechanisms for controlling temperature
fail. Heat stroke is a life-threatening
emergency needing immediate treatment.
While many people feel sick and faint
during heat waves, most of these people are
suffering from heat exhaustion, a related
condition usually less serious than heat
There are two types of heat stroke: classic,
non-exertional heat stroke (NEHS) and
exertional heat stroke (EHS). Classic heat
stroke occurs most commonly in very young
or older individuals, who have health risks,
in poor environmental conditions.
Exertional heat stroke occurs more often in
younger, healthy individuals who
participate in strenuous physical activity.
Travel Route: Johannesburg – Blyde River Canyon - Kruger – Swaziland – Isimangaliso – Durban – Eastern Cape Game Parks – Garden Route – Little Karoo – Winelands – Cape Town
Blyde River Canyon
Days 1 - 2
A scenic 4-5 hour takes you from Johannesburg to the spectacular Blyde River Canyon.
At 700m in depth, the Blyde River Canyon is ranked as the 3rd deepest canyon in the world. Millions of years of erosion have carved out dramatic rock formations, such as the Three Rondavels, the Pinnacle, and Bourke's Luck Potholes.
Here, in the north-eastern part of the Great Escarpment, the inland plateau declines abruptly and steeply and opens up fantastic views of the plains of the Lowveld a thousand metres below.
Possibly the best view in the whole of the Blyde River Canyon is of the "Three Rondavels", huge, round rocks, thought to be reminiscent of the houses or huts of the indigenous people, known as rondavels.
This canyon is part of the famous Panorama route. This route starts at the town Graskop and includes God's Window, the Pinnacle and Bourke's Luck Potholes.
Accommodation: Rissington Inn / Oliver´s Lodge
A stroke happens when blood flow to a part of the brain stops. A stroke is sometimes called a "brain attack."
Causes, incidence, and risk factors
If blood flow is stopped for longer than a few seconds, the brain cannot get blood and oxygen. Brain cells can die, causing permanent damage.
There are two major types of stroke: ischemic stroke and hemorrhagic stroke.
Ischemic stroke occurs when a blood vessel that supplies blood to the brain is blocked by a blood clot. This may happen in two ways:
A clot may form in an artery that is already very narrow. This is called a thrombotic stroke.
Causes, incidence, and risk factors
Insulin is a hormone produced by the pancreas to control blood sugar. Diabetes can be caused by too little insulin, resistance to insulin, or both.
To understand diabetes, it is important to first understand the normal process by which food is broken down and used by the body for energy. Several things happen when food is digested:
A sugar called glucose enters the bloodstream. Glucose is a source of fuel for the body.
An organ called the pancreas makes insulin. The role of insulin is to move glucose from the bloodstream into muscle, fat, and liver cells, where it can be used as fuel.
People with diabetes have high blood sugar because their body cannot move sugar into fat, liver, and muscle cells to be stored for energy. This is because either:
Causes, incidence, and risk factors
Asthma is caused by inflammation in the airways. When an asthma attack occurs, the muscles surrounding the airways become tight and the lining of the air passages swells. This reduces the amount of air that can pass by.
In sensitive people, asthma symptoms can be triggered by breathing in allergy-causing substances (called allergens or triggers).
Common asthma triggers include:
Animals (pet hair or dander)
Changes in weather (most often cold weather)
Chemicals in the air or in food
Respiratory infections, such as the common cold
Strong emotions (stress)
Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) provoke asthma in some patients.
Many people with asthma have a personal or family history of allergies, such as hay fever (allergic rhinitis) or eczema. Others have no history of allergies.
Most people with asthma have attacks separated by symptom-free periods. Some people have long-term shortness of breath with episodes of increased shortness of breath. Either wheezing or a cough may be the main symptom.
Asthma attacks can last for minutes to days, and can become dangerous if the airflow is severely restricted.
A miscarriage may also be called a "spontaneous abortion." This refers to naturally occurring events, not medical abortions or surgical abortions.
Other terms for the early loss of pregnancy include:
Complete abortion: All of the products of conception exit the body
Incomplete abortion: Only some of the products of conception exit the body
Inevitable abortion: The symptoms cannot be stopped, and a miscarriage will happen
Infected (septic) abortion: The lining of the womb, or uterus, and any remaining products of conception become infected
Missed abortion: The pregnancy is lost and the products of conception do not exit the body
The skin's job is to protect the inside of the body from the outside world, and acts as a preventive barrier against intruders (for example, infection, chemicals, or ultraviolet light). It also plays an important role in the body's temperature control. One way that the body cools itself is by sweating, and allowing that sweat or perspiration to evaporate. Sweat is manufactured in sweat glands that line the entire body (except for a few small spots like fingers, toenails, and the ear canal).
Sweat glands are located in the dermis or deep layer of the skin, and are regulated by the temperature control centers in the brain. Sweat from the gland gets to the surface of the skin by a duct.
A heat rash occurs when sweat ducts become clogged and the sweat can't get to the surface of the skin. Instead, it becomes trapped beneath the skin's surface causing a mild inflammation or rash.
Heat rash is also called prickly heat or miliaria.
Picture of the layers of the skin including the sweat glands
What are the causes of heat rash?
It is uncertain why some people get heat rashes and others don't.
The sweat gland ducts can get blocked if excessive sweating occurs, and that sweat is not allowed to evaporate from a specific area. Some examples of how blockage may occur include the following:
* Creases in the skin like the neck, armpit, or groin have skin touching adjacent skin, which makes it difficult for air to circulate, preventing sweat evaporation.
* Tight clothing that prevents sweat evaporation.
* Bundling up in heavy clothing or sheets. This may occur when a person tries to keep warm in wintertime or when chilled because of an illness and fever.
* Heavy creams or lotions can clog sweat ducts.
Babies have immature sweat glands that aren't able to get rid of all the sweat they produce, which can cause a heat rash if they are exposed to warm weather, are overdressed, excessively bundled, or have a fever.
Heat rash may occur as a side effect of some medications (for example, isotretinoin [Accutane] or clonidine [Catapres].
HEALTH ZONE - AfricansLOUNGE
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Which among these is the best Football Club
- Manchester United
Total: 58 votes
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