What are allergies?

Allergy is a common term for various diseases where symptoms arise because the ordinary functions of our immune systems overreact.

In general, there are two different types of allergies:

  • Immediate allergy reactions, such as hay fever and asthma, involve contact with pollen or animals, etc.
  • Contact allergies, such as a rash on the skin, derive from contact with substances that can cause allergies, like ingredients in skin care products.

Of the two different types of allergies, we naturally focus our attention on contact allergies, as they involve the skin.