An episiotomy is a surgical incision used to enlarge the vaginal opening to help deliver a baby. An episiotomy may be needed for any of the following reasons: 1  Birth is imminent and the perineum hasnât had time to stretch slowly. 2  The babyâs head is too large for the vaginal opening. 3  The baby is in distress. 4  The mother needs a forcep or vacuum assisted delivery.
A hypersensitive immune system is one which overreacts to a stimulus. A normal immune system reacts when the body identifies a foreign protein such as proteins on the outside of bacteria.This foreign material which invokes the immune response is called an antigen.mail Article. A hypersensitive immune system is one which overreacts to a stimulus. A normal immune system reacts when the body identifies a foreign protein such as proteins on the outside of bacteria. This foreign material which invokes the immune response is called an antigen.
In teens and adults, food allergies occur in about 4% of the total population. This difference between the clinically proven prevalence of food allergy and the public perception of the problem is in part due to reactions called food intolerances rather than food allergies. A food allergy, or hypersensitivity, is an abnormal response to a food that is triggered by the immune system. The immune system is not responsible for the symptoms of a food intolerance, even though these symptoms can resemble those of a food allergy. For example, being allergic to milk is different from not being able to digest it properly due to lactose intolerance.