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.
Signs and symptoms of anaphylaxis include: 1  Skin reactions, including hives, itching, and flushed or pale skin. 2  Swelling of the face, eyes, lips or throat. 3  Constriction of the airways, leading to wheezing and trouble breathing.  A weak and rapid 1  pulse. Nausea, vomiting or diarrhea.  Dizziness, fainting or unconsciousness.