First of all we should try and explain what influenza (flu) is. There are three main types: A, B and C, with B and C only infecting humans and influenza A being able to infect humans, animals and birds. The surface of each influenza A virus contains two types of protein, neuraminidase (N), of which there are nine types, and haemagglutinin (H), of which there are sixteen types. Consequently, there are lots of sub-strains of the influenza A virus and they are given names depending on the type of proteins found on the surface. Examples of these sub-strains could be H1N1, H1N2 and H2N3.

Another characteristic of the A strain is that it has the ability to produce new strains – in other words, mutate. It is as these new strains occur that new types of flu are discovered.

Bird flu is a strain of influenza A that affects birds, of which all species can be affected. Whereas wild birds can carry the disease when they migrate, they don’t usually become ill with it whereas poultry birds like turkeys and chickens do become ill. The virus spreads easily between these birds.

Bird Flu

It is the H5N1 virus that is causing all the problems with humans at the moment. This strain has affected birds for almost half a century, but it mutated back in 1997 in the Far East and spread to humans. As of yet this strain of the virus cannot be transferred from human to human, only from bird to bird or sometime bird to human.

A sore or hole in the lining of an organ is known as an ulcer.  A stomach ulcer is known as a gastric ulcer while a duodenal ulcer is an ulcer in the duodenum which is part of the small intestine. Duodenal ulcers occur more frequently in men and usually between the ages of 20-45, while stomach ulcers occur more often than not in people over the age of 50.

The stomach is protected from acid by a lining of mucus but if the lining is damaged then the acid can come into contact with the stomach or intestine wall, causing an ulcer.

Symptoms of an ulcer include abdominal pain, feeling sick after eating, loss of appetite, weight loss, or difficulty swallowing.  More serious symptoms include black or tar like stools, severe stomach pain, or vomiting blood.

Stomach Ulcers

Ulcers can be caused by bacteria known as Helicobacter Pylori and also use of non-steroidal anti-inflammatory drugs (NSAIDs) such as aspirin.  Other causes of ulcers are smoking and drinking alcohol and it is also thought to run in some families.  Stress can aggravate an ulcer as it causes the stomach to produce more acid.

Diagnosis of an ulcer is confirmed through a procedure known as an endoscopy.  This is done in a hospital and it involves a thin tube being passed down to the stomach through the mouth and gullet.  This can show the doctor whether an ulcer is present.

Treatment of an ulcer depends on whether the cause was a bacterium or by using NSAIDs. Proton pump inhibitors are prescribed for ulcers which have not been caused by the H pylori bacteria and they work by reducing the amount of acid in the stomach.  For ulcers caused by H pylori bacteria, treatment is usually a combination of proton pump inhibitors and two antibiotics.

Skin Ulcers

In nearly all countries of the world, back pain is the single largest cause of absence due to sickness from work. It is a chronic problem in a lot of people and a large proportion suffer from recurring problems. More often than not, the pain is due to minor damage that may have occurred to the muscles of ligaments of the back due to a variety of reasons such as lifting, twisting, being overweight or even standing in the wrong sort of position.

On other occasions it can be caused by more serious medical conditions such as a slipped disc, a disease like arthritis, muscle tears or scoliosis (curvature of the spine). When first suffering from back pain it is always advisable to visit a physician just to clarify the pain is not due to a treatable medical condition, and this is especially true in younger people.

Common Back Pain

Symptoms of back pain include a sharp pain in a specific area, a generalized ache in the region of the buttocks or lower back, stiffness and difficulty bending over. When the pain is due to a prolapsed disc there could be pressure on a nerve which will send pain radiating down the back of a leg to the foot. This is known as sciatica.

Back pain can occur to anyone of any age, but is more common in individuals who are overweight and those who sit in a slouching position for long periods of time. Treatment for back pain depends on the cause, but things like pain killers, losing weight and changing posture are the norm for “non-medical” back pain.