It's a common knowledge that skin is the largest organ of the human body. Its main function is protecting human body against different pathogens, which can causeinfections. Healthy skin can usually protect the human body from infection, in spite of the fact lots of bacteria live on the skin surface.

Bacterial skin infections can make harm even to the healthy skin. They are considered to be able to affect either small skin spot or large area spreading to different parts of the skin surface. It's important to mention bacterial skin infections might range from a treatable infection to a life-threatening skin condition. Be aware the majority of bacterial skin infections require appropriate clinical care by a physician or other medical professional.

Thus, even healthy people who have any break in the skin belong to the group at risk of infection. The most vulnerable people are children. Certain diseases or conditions can put children at greater risk of getting such infections as diabetes, skin damages caused by harmful ultraviolet sunrays or scratching, as well as AIDS (autoimmune deficiency syndrome).

Among the most common illnesses caused by bacterial skin infections are cellulitis and folliculitis. Speaking about cellulitis, it's necessary to admit that it is able to affect people of any ages and nationalities. It can occur anywhere in the human body and usually has localized symptoms and signs. At the same time people infected by cellulitis have general unpleasant condition: fever, shakes, chills, etc. The disease is known to have such predisposing factors as problems with venous or lymphatic drainage of the area, previous injury to the limb, diabetes, obesity, alcoholism, swelling of the legs, pregnancy, etc.

Cellulitis is a disease caused by bacterial skin infections. The most common reason of the disease is beta-haemolytic streptococcus pyogenes and staphylococcus aureus. It has the following distinguishing symptoms: increased warmth, redness, swelling, blistering and tenderness. Be aware that the person has probably no cellulitis if there's no increased warmth over the skin.

Another type of disease taken into consideration in this article is called folliculitis. This name is known to be given to a definite group of skin conditions in which hair follicles are inflamed. One of the most distinguishing signs of folliculitis is a tender red spot often with a surface pustule. According to the medical researches, folliculitis can appear in people due to occlusion, infection, irritation of other skin illnesses. That's why a proper diagnosis is required for getting the exact information regarding the cause of the disease. As a rule, swabs are taken from the pustules for culture in the laboratory. If folliculitis is caused by bacterial skin infections it is commonly due to bacteria called staphylococcus aureus.

Thus, the two diseases descibed in this article are often caused by the bacteria staphylococcus aureus and require prompt treatment with antibiotics.