A cough is basically a reflex action so the airways can be cleared of phlegm, mucus and other irritants like dust and smoke. An inflammation of the upper respiratory tract due to a virus could also cause a cough.

Coughing can be symptomatic of many conditions including bronchitis, asthma, the common cold, flu, whooping cough or smoking. There are even some prescribed medicines that can cause coughing such as ACE-inhibitors which are used to treat heart failure.

Sometimes a cough can be a symptom of an underlying serious medical condition such as heart failure, lung cancer, tuberculosis, pneumonia or a pulmonary embolism (which is a clot on the lung). Coughs that have been caused by things like flu or the common cold normally disappear after a few days, but coughs that have been caused by an infection of the lung, such as bronchitis, could persist for several weeks, even after the infection has cleared up and this is due to the inflammation of the airways which usually take a while to clear up.

Cough Mechanism and Receptors

If someone has been suffering from a cough for more than a couple of weeks after having a viral infection, they should go to their doctor for medical advice.

Acne can be described as a condition of the skin where inflamed spots build up, and it is a fairly common condition. They generally appear on the face and neck areas but can also emerge on the back, shoulders and less commonly, other areas of the body.

Acne

Acne is a direct result of an oily substance known as sebum that is secreted from the sebaceous gland. These glands are found at the end of each one of the thousands of hair follicles found on the skin. When there is an overproduction of sebum (this can be caused due to a variety of reasons), it tends to “mix” with dead skin cells which has the effect of blocking the hair follicles.

Sometimes these blocked follicles rupture, causing inflammation which could itself lead to cyst-like spots forming, and it is these that sometimes leave the scars when they disappear.

Contrary to popular belief, there is really no scientific basis that says eating a particular food (chocolate or fried foods, for example) makes an outbreak of acne any worse than it is, but some common triggers known to cause an acne outbreak include sitting exams or starting a new relationship (in teenagers) and the wearing of certain cosmetics, just before a period or pregnancy (for females).

Acne normally affects younger people due to increased levels of hormones in their bodies and the main symptoms of the condition range from little white spots that are pretty painless, to large red-colored cysts full of pus and sebum and which can be sore.

Hair loss is a problem that many people suffer from. There are different types of hair loss affecting both men and women. Whoever suffers from it, whether male or female, hair loss can lead to many issues with self-esteem and confidence. The main types of hair loss suffered by individuals are detailed below.
Male-pattern baldness is the commonest form of hair loss in human beings and is called androgenic alopecia. Although the term androgenic loosely means “of man genus”, the condition can actually affect women as well as men.

Hair Loss Patterns

The next type of hair loss is alopecia areata and this form involves bold patches that tend to come and go sporadically. One in every hundred people is affected by this, with the main group being young people and teenagers. One in every five cases can be attributed to hereditary reasons.

A problem with the immune system is thought to be the main contributor to alopecia areata and there is no effective treatment available for the condition. In most of the cases though, the hair will grow back within a year. One in every five persons affected with the condition go on to develop hair loss in a more severe form, such as alopecia totalis (no hair on the scalp) or alopecia universalis (lack of hair on the body as well as scalp).

Telogen effluvium is another form of alopecia hair loss which is quite common, and the condition can be described as extensive thinning of the hair rather than having specific bald patches. The hair loss in this condition is usually down to stress or a reaction to medication.