\(y=\frac{1}{x}\) This means that the line y=0 is a horizontal asymptote. Horizontal asymptotes occur most often when the function is a fraction where the top remains positive, but the bottom goes to infinity. Going back to the previous example, \(y=\frac{1}{x}\) is a fraction.
Causes of Wounds. Wound causes can be internal or external in origin. Wounds of internal origin are mainly due to impaired circulation, neuropathy or medical illness. Wounds of external origin are due to an outside force or trauma that causes open or closed wounds.
Impetigo is caused by bacteria. The 2 types of bacteria that cause the infection are called Staphylococcus aureus and Streptococcus pyogenes (Group A streptococcus). These bacteria can live on your skin without hurting you. However, if they get into a wound, they may cause an infection. Impetigo is more likely to happen if you have a chronic skin condition like eczema, or when you have a scratch, scrape, insect bite, or other skin irritation that causes a break in the skin. Impetigo is more common when it is hot and humid.