The net profit margin ratio is a profitability ratio. Essentially, it's the percentage of profit from business operations after you've deducted business operating expenses, interest expense, taxes and preferred stock dividends from revenues. Common stock dividends are the only major debit item left out of the equation.
Severe Allergic Reaction Facts. Anaphylaxis is a severe allergic reaction that occurs rapidly and causes a life-threatening response involving the whole body. This reaction can lead to difficulty breathing and shock ultimately leading to death. For an anaphylactic reaction to occur, you must have been exposed in the past to the substance that causes the reaction, called the antigen. A bee sting, for example, may not cause an allergic reaction the first time.
Anaphylaxis can also be called anaphylactic shock. It is an allergic reaction that can be life-threatening. In most cases, anaphylaxis will mean you need to take a trip to the emergency room. Click through the slideshow to find out about the causes of anaphylaxis.You'll also learn how to spot signs of anaphylactic shock and tips on how to treat and manage anaphylaxis.any happen with all allergic reactions. An anaphylactic reaction is different, though. That's because a number of symptoms can appear all at once. Symptoms may include: 1  itchy skin or hives. 2  a runny nose or sneezing. 3  an itchy mouth, throat, trouble swallowing, or swollen lips and tongue. 4  swollen limbs. 5  coughing.