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.

Autism is a type of brain disorder that affects the way individuals understand and hence, react with the world about them. Because of this, these people tend to act differently to others. On encountering an autistic child, someone would be hard-pressed to distinguish between the child and other “healthy” children around them. As there are no obvious external clues that visually tell us a child or person is autistic, these individuals are often mistakenly identified as naughty (in children) or rude.

Most autistic people have an exceptionally hard time trying to convey what they want to say or require, and others may end up saying the same things over and over again. This difficulty in understanding causes great confusion among the autistic, and although they can hear everything that is said to them, they cannot grasp the gist of what is being said.

Autism In Children

Mood swings are another symptom of autism. A person may be fine one moment but will have a mood change in a flash. This often happens because they can’t explain to people properly what they want. There are simple things that can trigger the mood swings as well. Anything from using the wrong dish for a meal to parking in the wrong spot can cause the person to change.

Autism is classed as a “spectrum disorder” which basically means the symptoms and characteristics of the condition are never the same in any two people. One thing that is common to all autism sufferers though is that they all have a hard time making sense of the world around them.

The common cold can be described as an infection of the higher reaches of the respiratory tract, or in other words the throat, the nasal passages and the nose. It is interesting to note that there are over two hundred different virus’ that can presently cause the common cold, but the main culprit in adults is the rhinoviruses, of which there are a hundred different strains and are classified as nose virus’.

When an individual becomes affected by a cold, the symptoms usually show up around two days later and these include a sore throat, a runny nose and sneezing. Later symptoms can consist of watery eyes, headache, muscle aches, stuffed nose, and a general feeling of being unwell. The symptoms of a cold can last anywhere from two to seven days but in some cases may even last up to two weeks.

Common Cold

People who have a common cold may find that is accompanied by bronchitis, laryngitis, an ear infection or with those who suffer from asthma, a worsening of the condition. Common cold infections are so prevalent that it is estimated that an adult will suffer between two and five colds each year. Because of this, the condition is the leading cause of people missing work days through illness.

Contrary to belief, colds are actually not very contagious when compared to other infections. Prolonged and close contact is required for the virus to spread and it must get into the nose for there to be infection.