Not to be confused with hemostasis. Homeostasis or homoeostasis (homeo- + -stasis) is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Examples of homeostasis include the regulation of temperature and the balance between acidity and alkalinity (pH). It is a process that maintains the stability of the human body's internal environment in response to changes in external conditions.
Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to something in the environment that usually causes little problem in most people.
Allergies happen when the bodyâs immune system responds to a substance that is foreign for instance pet dander, pollen or dust mites. The immune system triggers proteins referred to as antibodies. These antibodies protect the body from foreign invaders that would make the individual sick or create an infection.