The simple description of asthma is that it is a condition that affects the bronchioles in the lungs. Every now and again these tiny airways that are the bronchioles constrict in individuals who have asthma, and it is this that causes the typical symptoms of the condition. How much these tiny airways narrow, and the duration of each “attack” varies a great deal.

Asthma is actually caused by an inflammation in the bronchioles but it hasn’t been recognized up to now why this actually happens. It is this inflammation that affects the muscles that surround the bronchioles and causes them to constrict. This constriction then makes it difficult for air to enter and leave the lungs.

Asthma

Asthma can manifest itself at any age, but usually starts during childhood. In western society, an average of one in ten children and one in twenty adults suffer from asthma. Although the condition does run in families, there are still plenty of people who have it while no other members of their family are affected.

The most common types of symptoms suffered are coughing and wheezing accompanied by breathlessness and a tightening of the chest. These symptoms can also vary from mild to severe in different individuals.
Nearly all asthma sufferers are treated with inhalers and these are small devices that deliver tiny doses of drugs directly into the airways, which relieves irritation in turn helping the airways to expand, making it easier to breathe.

Psoriasis is a skin condition which can start at any age but usually starts after puberty. Skin cells are produced by the body and as new cells are produced the older ones on the outer layer of the skin die and flake off.  This process usually takes between 21 to 28 days, but for someone with psoriasis, the process is accelerated and can occur in as little as six days.  This results in an excess of skin cells building up on the surface of the skin which are then shed easily.  Psoriasis can occur anywhere on the body and appears as red, crumbling patches of skin.  The most common places on the body where psoriasis is found are the scalp, knees, elbows or lower back.

There are many treatments for psoriasis but no cure.  Symptoms can be mild in one person but extremely severe in others and can cause distress.  Psoriasis can be mild at some times and then flare up.  There are different types of psoriasis and most people only have one type at a time but find that one type can develop into another type.  The most common types of psoriasis are plaque psoriasis, nail psoriasis, guttate psoriasis, scalp psoriasis and inverse psoriasis.  There are rarer forms of psoriasis called pustular psoriasis and erythrodermic psoriasis.  Pustular psoriasis causes pus-filled blisters to appear on the skin, while erythrodermic psoriasis causes a rash to appear all over the body and can result in the body losing proteins and fluids.

Psoriasis

There are some factors which can trigger a flare up of psoriasis symptoms such as smoking, stress, alcohol, and some medicines.  There are three types of treatment for psoriasis and these are creams and ointments, lights which the skin can be exposed to and oral or injected medication.

HIV, or human immunodeficiency virus, is the virus which can lead to AIDS. There are many ways to contract this virus, with the most common being through unprotected sex and the sharing of needles.

People who are infected with HIV may initially not realize there is anything wrong with them as they do not show any symptoms. Nevertheless, some people tend to develop some flu like symptoms which can last for several weeks. Some of these symptoms may include fever, tiredness, loss of appetite, aching muscles and joints, rashes and swollen lymph glands.

HIV Virus Structure

When the virus enters the body, it takes residence in white blood cells that are known as CD4 lymphocytes. The virus takes total control of these cells and starts producing billions of replicas of itself every day.

Once infection of HIV occurs, the body starts to attack the virus and because of this the virus cannot make any copies of itself. This in turn leads to a false sense of wellness as although one would still have HIV, the infected person will begin to look and feel better. Unfortunately, during this period the virus is still attacking the lymph nodes, which are the body’s immune system center.

During the course of ten to fifteen years, the HIV manages to kill so many of the CD4 cells that the body no longer has the ability to fight off infections. Once the CD4 cell count drops below a certain number (200 or lower per mL – the average is 600 to 1000) the sufferer is classed as having AIDS (acquired immunodeficiency syndrome). Once a person has AIDS, the risk of infection form almost anything can cause fatal complications.

HIV Virus Cycle